Panty hose, tights, stockings, socks and other hosiery, knitted or crocheted

1. Scope and Applicability

This PCR governs production of foreground data packages for finished knitted or crocheted panty hose, tights, stockings, socks, and other hosiery within CPC 3.0 class 28210. It applies to products for consumer, professional, medical-support, sport, school, or work use when the product is saleable at the manufacturing gate and its fibre composition, construction, size basis, pairing convention, finish, and packaging exclusion are declared.

The foreground boundary starts with identified yarns, sewing thread, components, process chemicals, packaging, and utilities delivered to the hosiery-manufacturing system. It covers knitting or crocheting, toe closing or seaming and assembly, conditional wet processing and boarding, inspection, pairing, labelling, packaging, manufacturing waste, and conditional on-site wastewater treatment. Fibre production, yarn spinning or texturing, production of chemicals and packaging, purchased energy, inbound transport, and off-site waste treatment are connected through traceable upstream datasets unless they occur under the declared foreground operator's control.

The PCR does not cover woven hosiery, compression products whose principal identity is a regulated medical device without an apparel product function, footwear, knitted fabric sold as an intermediate, gloves, leggings or trousers not classified as hosiery, or apparel made of leather, fur, or plastics as the principal product. Distribution, retail, consumer use and laundering, reuse, and end-of-life are outside this manufacturing foreground dataset and may be connected in a downstream lifecycle model.

2. Product Category Identity

Field	Value
canonical_pcr_id	pcr.food-products-beverages-and-tobacco-textiles-apparel-and-leather-products.knitted-or-crocheted-fabrics-wearing-apparel.panty-hose-tights-stockings-socks-and-other-hosiery-knitted-or-crocheted
classification_refs	CPC 3.0: 28210, exact classification context
covered_products	Finished knitted or crocheted panty hose, tights, stockings, socks, knee-highs, ankle socks, footlets, and comparable hosiery, including products sold as pairs or single articles
excluded_products	Woven hosiery; knitted or crocheted fabric sold as an intermediate; gloves; non-hosiery leggings or trousers; footwear; principally leather, fur, or plastics apparel; medical devices without an apparel product function
representative_product	A saleable pair of knitted socks of declared fibre composition, yarn construction, size, knit structure, colour, finish, individual and pair mass, and packaging configuration
production_route	Delivered yarns and components -> knitting or crocheting -> toe closing or seaming and assembly -> conditional dyeing, washing, finishing, drying, or boarding -> inspection, pairing, labelling, and packaging
market_state	Saleable finished hosiery at the manufacturing gate; reference-product mass excludes consumer and distribution packaging

3. Reference Flow

Field	Value
What	Finished, saleable knitted or crocheted hosiery at the manufacturing gate
How much	1 kg net finished hosiery mass, excluding packaging
How well	Conforming to the declared product specification and acceptance criteria for composition, dimensions, construction, elasticity or support level where claimed, colour, finish, and moisture condition
How long or cycle	One declared production period or batch; expected service life, number of wear days, pairing loss, and care scenario are separate downstream-use qualifiers
reference_flow_link	Mass-normalized manufacturing reference flow; conversion to one article, one pair, or one day of wear requires measured article or pair mass and a separately documented service-life and use scenario

Field	Value
Reference amount	1 kg net accepted finished hosiery
Reference product flow	Panty hose, tights, stockings, socks and other hosiery, knitted or crocheted c00d32b4-7e02-479b-8cae-d94b50ed1a7a
Reference flow property	Mass 93a60a56-a3c8-11da-a746-0800200b9a66
Reference unit group	Units of mass 93a60a57-a4c8-11da-a746-0800200c9a66
Reference unit	kg
Required qualifiers	hosiery type; single-article or pair convention; fibre composition and mass percentages; yarn count and construction where material; knit or crochet structure; size or production-weighted size mix; net mass per article or pair; colour and dyeing route; finishing and boarding route; elasticity, compression, thermal, protective, or medical-support claim where applicable; finished-product moisture condition; manufacturing site and geography; included production steps; reporting period; packaging exclusion; expected uses and care scenario when projected to a use-based functional unit

When constructing a foreground data package, every item in Required qualifiers shall be declared in dataset metadata, process notes, the reference-flow comment, the product description, or an equivalent data-package field. Missing required qualifiers make the reference flow incomplete.

4. Measurement and Unit Rules

rule_id	Applies to	Required property	Required unit	Rule
reference_product_mass	Reference product and all normalized results	Mass 93a60a56-a3c8-11da-a746-0800200b9a66	kg	Measure net accepted hosiery after final conditioning and before packaging. Normalize every foreground amount to exactly 1 kg net accepted finished hosiery.
pair_and_item_conversion	Records expressed as single articles, pairs, dozens, or packs	Mass 93a60a56-a3c8-11da-a746-0800200b9a66	kg	Convert counts using measured net mass for the same product, size stratum, pair convention, and reporting period; retain sample size, weighing method, mean, and variability.
packaging_mass_separation	Consumer and distribution packaging	Mass 93a60a56-a3c8-11da-a746-0800200b9a66	kg	Measure packaging separately by material and do not include it in the 1 kg reference product.
composition_mass_closure	Fibre, yarn, sewing thread, elastic component, finish add-on, and product declarations	Mass 93a60a56-a3c8-11da-a746-0800200b9a66	kg and mass %	Use one consistent conditioned mass basis and reconcile declared constituent masses to net accepted product mass, with moisture and finish add-on stated.

5. System Boundary

Boundary Abstraction

Field	Value
declared_starting_condition	Identified yarns, sewing thread, product components, wet-processing chemicals, packaging, and utilities delivered to the first foreground hosiery-manufacturing operation
starting_condition_role	Traceable upstream product inputs to hosiery manufacturing; no delivered input is burden-free
product_classification_scope	The finished reference product is CPC 3.0 28210; yarns, chemicals, utilities, packaging, transport, and treatment services retain their own identities
recursive_input_rule	A purchased finished CPC 28210 article used for rework, pairing replacement, or assembly shall be recorded as an identified finished-hosiery input and shall not be recursively rebuilt inside this foreground package
upstream_dataset_requirement	Require representative upstream datasets for every material input, fibre and yarn production, yarn texturing or dyeing where applicable, process chemicals, packaging manufacture, purchased energy, inbound transport, and off-site waste or wastewater treatment
disclosure	Declare whether knitting, toe closing, seaming, assembly, dyeing, washing, finishing, drying, boarding, inspection, pairing, packaging, wastewater treatment, and waste treatment are inside or outside operator control; disclose site, geography, technology, reporting period, outsourced steps, and every generic or proxy dataset

Normative Boundary Rules

rule_id	Applies to	Rule	source_ids
boundary_required_foreground	Hosiery manufacturing	Include knitting or crocheting, toe closing or seaming and assembly, inspection, pairing, labelling, packaging, and manufacturing wastes for the declared route.	epd-international-pcr-2024-03-apparel
boundary_conditional_operations	Wet finishing, boarding, and treatment	Include dyeing, washing, bleaching, finishing, drying, boarding, on-site steam or heat generation, direct emissions, and wastewater treatment whenever performed under foreground control; otherwise connect representative upstream or service datasets and prevent double counting.	epd-international-pcr-2024-03-apparel
boundary_upstream_traceability	Purchased materials and services	Do not treat yarn, thread, chemicals, packaging, electricity, steam, transport, or off-site treatment as burden-free; link each material exchange to a representative upstream dataset or disclose a data gap.	epd-international-pcr-2024-03-apparel; ec-pef-method-2021-2279
boundary_inventory_completeness	Product system	Account for at least 99% of product-content mass and energy use and assess exclusions for environmental relevance; document each cut-off and the evidence used to verify it.	epd-international-pcr-2024-03-apparel
boundary_downstream_separation	Dataset use	Keep distribution, retail, consumer care, reuse, and end-of-life outside this manufacturing foreground dataset while preserving metadata required to connect those stages in a lifecycle model.	epd-international-pcr-2024-03-apparel; ec-pef-method-2021-2279
boundary_atomic_exchange	Inventory construction	Represent each yarn, chemical, utility, packaging component, waste stream, and elementary emission as a separate exchange; do not use collection labels or selector instructions as flows.	mass-balance-identity

6. Process Inventory Structure

Process Map

process_id	process_name	inclusion	inclusion_condition	role	quantitative_reference
hosiery_knitting	Hosiery knitting or crocheting	required	Always	Converts declared yarns into knitted or crocheted hosiery bodies	kg accepted knitted hosiery bodies
toe_closing_assembly	Toe closing, seaming, and assembly	required	Always; operations may be integral to knitting when documented	Closes toes, forms seams, and attaches product-specific components	kg accepted assembled hosiery
wet_finishing_boarding	Wet finishing, drying, and boarding	conditional	Include every foreground-controlled washing, bleaching, dyeing, softening, heat-setting, drying, or boarding step	Applies declared colour, finish, dimensions, and shape	kg accepted wet-finished hosiery
inspection_packaging	Inspection, pairing, labelling, and packaging	required	Always	Verifies conformity, pairs articles where applicable, labels, packs, and releases product	1 kg net accepted finished hosiery
onsite_wastewater_treatment	On-site wastewater treatment	conditional	Include when hosiery-manufacturing wastewater is treated on site	Treats measured wet-processing wastewater and reports residual emissions and sludge	m3 wastewater treated

Process: Hosiery knitting or crocheting (hosiery_knitting)

Inputs

Product flows

Cotton yarn (cotton_yarn_input)

Record cotton yarn only for products whose bill of materials contains cotton yarn, separating materially different counts, twist, colour, recycled content, and suppliers into separate dataset exchanges.

• Selected flow: Cotton yarn, ring-spun, with declared yarn count and fibre origin
• Flow property / unit: Mass / kg
• Amount rule: measured issued mass adjusted for returned cones and opening and closing work-in-process stock
• Value mode: Foreground record (foreground_record)
• Specificity: Product-specific (product_specific)
• Normalization basis: per kg accepted knitted hosiery bodies
• Basis kind: Process output (process_output)
• Evidence kind: Collected record (collected_record)
• Collection protocol: cp_yarn_material_balance
• Sources: epd-international-pcr-2024-03-apparel

Polyamide-6 continuous filament yarn (polyamide6_yarn_input)

Record polyamide-6 continuous filament yarn when present, with linear density, filament structure, texturing, colour, and recycled content declared.

• Selected flow: Polyamide 6 continuous filament yarn
• Flow property / unit: Mass / kg
• Amount rule: measured issued mass adjusted for returned cones and opening and closing work-in-process stock
• Value mode: Foreground record (foreground_record)
• Specificity: Product-specific (product_specific)
• Normalization basis: per kg accepted knitted hosiery bodies
• Basis kind: Process output (process_output)
• Evidence kind: Collected record (collected_record)
• Collection protocol: cp_yarn_material_balance
• Sources: epd-international-pcr-2024-03-apparel

Polyester continuous filament yarn (polyester_yarn_input)

Record polyester continuous filament yarn when present, with linear density, filament structure, texturing, colour, and recycled content declared.

• Selected flow: Polyethylene terephthalate continuous filament yarn
• Flow property / unit: Mass / kg
• Amount rule: measured issued mass adjusted for returned cones and opening and closing work-in-process stock
• Value mode: Foreground record (foreground_record)
• Specificity: Product-specific (product_specific)
• Normalization basis: per kg accepted knitted hosiery bodies
• Basis kind: Process output (process_output)
• Evidence kind: Collected record (collected_record)
• Collection protocol: cp_yarn_material_balance
• Sources: epd-international-pcr-2024-03-apparel

Elastane filament yarn (elastane_yarn_input)

Record elastane filament yarn when used for stretch, fit, support, or compression, with linear density, covering construction, and supplier specification retained.

• Selected flow: Elastane filament yarn
• Flow property / unit: Mass / kg
• Amount rule: measured issued mass adjusted for returned cones and opening and closing work-in-process stock
• Value mode: Foreground record (foreground_record)
• Specificity: Product-specific (product_specific)
• Normalization basis: per kg accepted knitted hosiery bodies
• Basis kind: Process output (process_output)
• Evidence kind: Collected record (collected_record)
• Collection protocol: cp_yarn_material_balance
• Sources: epd-international-pcr-2024-03-apparel

Knitting electricity (knitting_electricity)

Record electricity consumed by knitting or crocheting machines and directly associated extraction or compressed-air equipment using the site supply identity and voltage level.

• Selected flow: Electricity, grid supply at the hosiery-manufacturing site
• Flow property / unit: Energy / kWh
• Amount rule: submetered consumption or a documented equipment-meter allocation reconciled to the site meter
• Value mode: Foreground record (foreground_record)
• Specificity: Site-specific (site_specific)
• Normalization basis: per kg accepted knitted hosiery bodies
• Basis kind: Process output (process_output)
• Evidence kind: Collected record (collected_record)
• Collection protocol: cp_energy_records
• Sources: epd-international-pcr-2024-03-apparel

Waste flows

Elementary flows

Outputs

Product flows

Accepted knitted hosiery body (knitted_hosiery_body_output)

Record accepted knitted or crocheted bodies transferred to toe closing, seaming, or assembly, using the declared product construction and composition.

• Selected flow: Knitted hosiery body of the declared product composition and construction
• Flow property / unit: Mass / kg
• Amount rule: measured accepted transfer mass
• Value mode: Foreground record (foreground_record)
• Specificity: Product-specific (product_specific)
• Normalization basis: per kg accepted knitted hosiery bodies
• Basis kind: Process output (process_output)
• Evidence kind: Collected record (collected_record)
• Collection protocol: cp_knitting_output_waste
• Sources: mass-balance-identity

Waste flows

Cotton yarn waste (cotton_yarn_waste)

Record cotton yarn ends, unusable cone remnants, and cotton-dominant knitting rejects separately from synthetic yarn wastes, with actual destination documented.

• Selected flow: Cotton yarn waste
• Flow property / unit: Mass / kg
• Amount rule: measured cotton-yarn waste mass
• Value mode: Foreground record (foreground_record)
• Specificity: Product-specific (product_specific)
• Normalization basis: per kg accepted knitted hosiery bodies
• Basis kind: Process output (process_output)
• Evidence kind: Collected record (collected_record)
• Collection protocol: cp_knitting_output_waste
• Sources: epd-international-pcr-2024-03-apparel

Polyamide-6 yarn waste (polyamide6_yarn_waste)

Record polyamide-6 yarn ends and unusable cone remnants separately from cotton and polyester wastes, with contamination and actual destination documented.

• Selected flow: Polyamide 6 filament yarn waste
• Flow property / unit: Mass / kg
• Amount rule: measured polyamide-6 yarn waste mass
• Value mode: Foreground record (foreground_record)
• Specificity: Product-specific (product_specific)
• Normalization basis: per kg accepted knitted hosiery bodies
• Basis kind: Process output (process_output)
• Evidence kind: Collected record (collected_record)
• Collection protocol: cp_knitting_output_waste
• Sources: epd-international-pcr-2024-03-apparel

Polyester yarn waste (polyester_yarn_waste)

Record polyester yarn ends and unusable cone remnants separately from cotton and polyamide wastes, with contamination and actual destination documented.

• Selected flow: Polyethylene terephthalate filament yarn waste
• Flow property / unit: Mass / kg
• Amount rule: measured polyester-yarn waste mass
• Value mode: Foreground record (foreground_record)
• Specificity: Product-specific (product_specific)
• Normalization basis: per kg accepted knitted hosiery bodies
• Basis kind: Process output (process_output)
• Evidence kind: Collected record (collected_record)
• Collection protocol: cp_knitting_output_waste
• Sources: epd-international-pcr-2024-03-apparel

Elementary flows

Process: Toe closing, seaming, and assembly (toe_closing_assembly)

Inputs

Product flows

Knitted hosiery body (knitted_body_input)

Record the product-specific knitted body transferred from knitting and reconcile its mass with the upstream internal output and stock change.

• Selected flow: Knitted hosiery body of the declared product composition and construction
• Flow property / unit: Mass / kg
• Amount rule: measured transferred mass
• Value mode: Foreground record (foreground_record)
• Specificity: Product-specific (product_specific)
• Normalization basis: per kg accepted assembled hosiery
• Basis kind: Process output (process_output)
• Evidence kind: Collected record (collected_record)
• Collection protocol: cp_assembly_records
• Sources: mass-balance-identity

Polyester sewing thread (polyester_sewing_thread_input)

Record polyester sewing thread used for toe closing or seaming, with thread count, construction, colour, and supplier specification declared.

• Selected flow: Polyester sewing thread
• Flow property / unit: Mass / kg
• Amount rule: measured issue less returns, reconciled to work orders and stock change
• Value mode: Foreground record (foreground_record)
• Specificity: Product-specific (product_specific)
• Normalization basis: per kg accepted assembled hosiery
• Basis kind: Process output (process_output)
• Evidence kind: Collected record (collected_record)
• Collection protocol: cp_assembly_records
• Sources: epd-international-pcr-2024-03-apparel

Assembly electricity (assembly_electricity)

Record electricity consumed by linking, seaming, sewing, and directly associated equipment under the site supply identity.

• Selected flow: Electricity, grid supply at the hosiery-manufacturing site
• Flow property / unit: Energy / kWh
• Amount rule: submetered consumption or documented equipment-meter allocation reconciled to the site meter
• Value mode: Foreground record (foreground_record)
• Specificity: Site-specific (site_specific)
• Normalization basis: per kg accepted assembled hosiery
• Basis kind: Process output (process_output)
• Evidence kind: Collected record (collected_record)
• Collection protocol: cp_energy_records
• Sources: epd-international-pcr-2024-03-apparel

Waste flows

Elementary flows

Outputs

Product flows

Accepted assembled hosiery (assembled_hosiery_output)

Record assembled hosiery accepted for finishing or inspection after toe closing, seaming, and component attachment.

• Selected flow: Assembled hosiery of the declared product composition and construction
• Flow property / unit: Mass / kg
• Amount rule: measured accepted output mass
• Value mode: Foreground record (foreground_record)
• Specificity: Product-specific (product_specific)
• Normalization basis: per kg accepted assembled hosiery
• Basis kind: Process output (process_output)
• Evidence kind: Collected record (collected_record)
• Collection protocol: cp_assembly_records
• Sources: mass-balance-identity

Waste flows

Off-cut or rejected hosiery material (offcut_hosiery_waste)

Record clipped seam allowances, toe remnants, and rejected assembled articles as one product-composition-specific waste stream only when they share the same physical composition and treatment route.

• Selected flow: Hosiery production waste of the declared finished-product composition
• Flow property / unit: Mass / kg
• Amount rule: measured waste mass
• Value mode: Foreground record (foreground_record)
• Specificity: Product-specific (product_specific)
• Normalization basis: per kg accepted assembled hosiery
• Basis kind: Process output (process_output)
• Evidence kind: Collected record (collected_record)
• Collection protocol: cp_assembly_records
• Sources: epd-international-pcr-2024-03-apparel

Elementary flows

Process: Wet finishing, drying, and boarding (wet_finishing_boarding)

Inputs

Product flows

Assembled hosiery (assembled_hosiery_input)

Record assembled hosiery entering the declared wet-finishing or boarding route and reconcile it with the assembly output and stock change.

• Selected flow: Assembled hosiery of the declared product composition and construction
• Flow property / unit: Mass / kg
• Amount rule: measured batch input mass
• Value mode: Foreground record (foreground_record)
• Specificity: Product-specific (product_specific)
• Normalization basis: per kg accepted wet-finished hosiery
• Basis kind: Process output (process_output)
• Evidence kind: Collected record (collected_record)
• Collection protocol: cp_wet_finishing_records
• Sources: mass-balance-identity

Process water (process_water_input)

Record metered water entering washing, dyeing, rinsing, softening, or steam generation, using the actual source and treatment state.

• Selected flow: Process water supplied to the hosiery wet-finishing line
• Flow property / unit: Volume / m3
• Amount rule: metered batch or line consumption reconciled to the site water balance
• Value mode: Foreground record (foreground_record)
• Specificity: Site-specific (site_specific)
• Normalization basis: per kg accepted wet-finished hosiery
• Basis kind: Process output (process_output)
• Evidence kind: Collected record (collected_record)
• Collection protocol: cp_wet_finishing_records
• Sources: epd-international-pcr-2024-03-apparel

Wet-finishing electricity (wet_finishing_electricity)

Record electricity consumed by wet-processing machines, pumps, dryers, boarding machines, and directly associated controls.

• Selected flow: Electricity, grid supply at the hosiery-manufacturing site
• Flow property / unit: Energy / kWh
• Amount rule: submetered consumption or documented equipment-meter allocation reconciled to the site meter
• Value mode: Foreground record (foreground_record)
• Specificity: Site-specific (site_specific)
• Normalization basis: per kg accepted wet-finished hosiery
• Basis kind: Process output (process_output)
• Evidence kind: Collected record (collected_record)
• Collection protocol: cp_energy_records
• Sources: epd-international-pcr-2024-03-apparel

Purchased steam (purchased_steam_input)

Record purchased steam only when it crosses the foreground boundary, with pressure, temperature, condensate return, and supplier route declared.

• Selected flow: Purchased saturated steam at declared pressure
• Flow property / unit: Energy / MJ
• Amount rule: metered steam delivery or supplier invoice reconciled to the production period
• Value mode: Foreground record (foreground_record)
• Specificity: Site-specific (site_specific)
• Normalization basis: per kg accepted wet-finished hosiery
• Basis kind: Process output (process_output)
• Evidence kind: Collected record (collected_record)
• Collection protocol: cp_energy_records
• Sources: epd-international-pcr-2024-03-apparel

Reactive Black 5 dyestuff (reactive_black5_input)

Record Reactive Black 5 only for a declared recipe that actually uses this dyestuff; other dyestuffs shall be represented by separate chemical-specific cards and shall not be substituted into this row.

• Selected flow: Reactive Black 5 dyestuff, CAS 17095-24-8
• Flow property / unit: Mass / kg
• Amount rule: batch recipe issue reconciled to stock and returned material
• Value mode: Foreground record (foreground_record)
• Specificity: Product-specific (product_specific)
• Normalization basis: per kg accepted wet-finished hosiery
• Basis kind: Process output (process_output)
• Evidence kind: Collected record (collected_record)
• Collection protocol: cp_chemical_recipe_records
• Sources: epd-international-pcr-2024-03-apparel

Sodium chloride (sodium_chloride_input)

Record sodium chloride only when the declared wet-processing recipe uses it and retain grade and concentration evidence.

• Selected flow: Sodium chloride, CAS 7647-14-5
• Flow property / unit: Mass / kg
• Amount rule: batch recipe issue reconciled to stock and returned material
• Value mode: Foreground record (foreground_record)
• Specificity: Product-specific (product_specific)
• Normalization basis: per kg accepted wet-finished hosiery
• Basis kind: Process output (process_output)
• Evidence kind: Collected record (collected_record)
• Collection protocol: cp_chemical_recipe_records
• Sources: epd-international-pcr-2024-03-apparel

Sodium carbonate (sodium_carbonate_input)

Record sodium carbonate only when the declared wet-processing recipe uses it and retain grade and concentration evidence.

• Selected flow: Sodium carbonate, CAS 497-19-8
• Flow property / unit: Mass / kg
• Amount rule: batch recipe issue reconciled to stock and returned material
• Value mode: Foreground record (foreground_record)
• Specificity: Product-specific (product_specific)
• Normalization basis: per kg accepted wet-finished hosiery
• Basis kind: Process output (process_output)
• Evidence kind: Collected record (collected_record)
• Collection protocol: cp_chemical_recipe_records
• Sources: epd-international-pcr-2024-03-apparel

Acetic acid (acetic_acid_input)

Record acetic acid only when the declared neutralization or finishing recipe uses it, retaining solution concentration and delivered mass.

• Selected flow: Acetic acid, CAS 64-19-7
• Flow property / unit: Mass / kg
• Amount rule: delivered solution mass multiplied by verified active concentration, reconciled to batch issue and stock
• Value mode: Foreground record (foreground_record)
• Specificity: Product-specific (product_specific)
• Normalization basis: per kg accepted wet-finished hosiery
• Basis kind: Process output (process_output)
• Evidence kind: Collected record (collected_record)
• Collection protocol: cp_chemical_recipe_records
• Sources: epd-international-pcr-2024-03-apparel

Waste flows

Elementary flows

Outputs

Product flows

Accepted wet-finished hosiery (wet_finished_hosiery_output)

Record accepted hosiery after declared washing, dyeing, finishing, drying, and boarding, at the stated moisture condition.

• Selected flow: Wet-finished hosiery of the declared product composition, colour, finish, and moisture condition
• Flow property / unit: Mass / kg
• Amount rule: measured accepted conditioned output mass
• Value mode: Foreground record (foreground_record)
• Specificity: Product-specific (product_specific)
• Normalization basis: per kg accepted wet-finished hosiery
• Basis kind: Process output (process_output)
• Evidence kind: Collected record (collected_record)
• Collection protocol: cp_wet_finishing_records
• Sources: mass-balance-identity

Waste flows

Wet-finishing wastewater (wet_finishing_wastewater_output)

Record the measured wastewater stream leaving the wet-finishing process for on-site or off-site treatment, with route, pH, temperature, and sampled composition declared.

• Selected flow: Hosiery wet-finishing wastewater with declared treatment route
• Flow property / unit: Volume / m3
• Amount rule: metered discharge volume matched to represented production batches
• Value mode: Foreground record (foreground_record)
• Specificity: Site-specific (site_specific)
• Normalization basis: per kg accepted wet-finished hosiery
• Basis kind: Process output (process_output)
• Evidence kind: Collected record (collected_record)
• Collection protocol: cp_wastewater_records
• Sources: epd-international-pcr-2024-03-apparel

Elementary flows

Process: Inspection, pairing, labelling, and packaging (inspection_packaging)

Inputs

Product flows

Wet-finished or assembled hosiery (wet_finished_hosiery_input)

Record accepted hosiery entering inspection and packaging, using the actual route output and retaining the moisture condition.

• Selected flow: Finished hosiery intermediate of the declared product composition and route
• Flow property / unit: Mass / kg
• Amount rule: measured transfer mass
• Value mode: Foreground record (foreground_record)
• Specificity: Product-specific (product_specific)
• Normalization basis: per kg net accepted finished hosiery
• Basis kind: Process output (process_output)
• Evidence kind: Collected record (collected_record)
• Collection protocol: cp_product_output_records
• Sources: mass-balance-identity

Packaging-line electricity (packaging_electricity)

Record electricity consumed by inspection, testing, pairing, labelling, and packaging equipment.

• Selected flow: Electricity, grid supply at the hosiery-manufacturing site
• Flow property / unit: Energy / kWh
• Amount rule: submetered consumption or documented equipment-meter allocation reconciled to the site meter
• Value mode: Foreground record (foreground_record)
• Specificity: Site-specific (site_specific)
• Normalization basis: per kg net accepted finished hosiery
• Basis kind: Process output (process_output)
• Evidence kind: Collected record (collected_record)
• Collection protocol: cp_energy_records
• Sources: epd-international-pcr-2024-03-apparel

Corrugated board box (corrugated_box_input)

Record corrugated board used for distribution boxes separately from film, labels, hangers, and pallets, with grade and recycled content declared.

• Selected flow: Corrugated fibreboard box
• Flow property / unit: Mass / kg
• Amount rule: measured issue less unused returns, reconciled to packed output and stock change
• Value mode: Foreground record (foreground_record)
• Specificity: Product-specific (product_specific)
• Normalization basis: per kg net accepted finished hosiery
• Basis kind: Reference flow (reference_flow)
• Evidence kind: Collected record (collected_record)
• Collection protocol: cp_packaging_records
• Sources: epd-international-pcr-2024-03-apparel

Low-density polyethylene bag (ldpe_bag_input)

Record each low-density polyethylene consumer or grouping bag separately from other packaging polymers, with film thickness and recycled content declared.

• Selected flow: Low-density polyethylene film bag
• Flow property / unit: Mass / kg
• Amount rule: measured issue less unused returns, reconciled to packed output and stock change
• Value mode: Foreground record (foreground_record)
• Specificity: Product-specific (product_specific)
• Normalization basis: per kg net accepted finished hosiery
• Basis kind: Reference flow (reference_flow)
• Evidence kind: Collected record (collected_record)
• Collection protocol: cp_packaging_records
• Sources: epd-international-pcr-2024-03-apparel

Paper product label (paper_label_input)

Record paper labels or bands separately from polymer labels, adhesives, and boxes, with paper grade and printing route declared.

• Selected flow: Printed paper product label
• Flow property / unit: Mass / kg
• Amount rule: component count multiplied by verified unit mass and reconciled to issued stock
• Value mode: Foreground record (foreground_record)
• Specificity: Product-specific (product_specific)
• Normalization basis: per kg net accepted finished hosiery
• Basis kind: Reference flow (reference_flow)
• Evidence kind: Collected record (collected_record)
• Collection protocol: cp_packaging_records
• Sources: epd-international-pcr-2024-03-apparel

Waste flows

Elementary flows

Outputs

Product flows

Net accepted finished hosiery (reference_hosiery_output)

Record saleable finished hosiery after inspection and pairing, before packaging, using the verified public TianGong product-flow identity.

• Selected flow: Panty hose, tights, stockings, socks and other hosiery, knitted or crocheted c00d32b4-7e02-479b-8cae-d94b50ed1a7a
• Flow property / unit: Mass 93a60a56-a3c8-11da-a746-0800200b9a66 / kg
• Amount rule: net accepted conditioned product mass normalized to exactly 1 kg
• Value mode: Calculated value (calculated_value)
• Specificity: Product-specific (product_specific)
• Normalization basis: exactly 1 kg net accepted finished hosiery
• Basis kind: Reference flow (reference_flow)
• Evidence kind: Calculated from collection (calculated_from_collection)
• Collection protocol: cp_product_output_records
• Sources: mass-balance-identity

Waste flows

Off-spec finished hosiery (offspec_finished_hosiery_waste)

Record inspected hosiery rejected from sale as a product-composition-specific waste stream and retain its actual reuse, recovery, or treatment destination.

• Selected flow: Off-spec finished hosiery of the declared product composition
• Flow property / unit: Mass / kg
• Amount rule: measured rejected net mass
• Value mode: Foreground record (foreground_record)
• Specificity: Product-specific (product_specific)
• Normalization basis: per kg net accepted finished hosiery
• Basis kind: Reference flow (reference_flow)
• Evidence kind: Collected record (collected_record)
• Collection protocol: cp_product_output_records
• Sources: epd-international-pcr-2024-03-apparel

Corrugated board packaging waste (cardboard_packaging_waste)

Record damaged and discarded corrugated board separately from paper labels and polymer film, with actual treatment route documented.

• Selected flow: Corrugated fibreboard packaging waste
• Flow property / unit: Mass / kg
• Amount rule: measured discarded corrugated-board mass
• Value mode: Foreground record (foreground_record)
• Specificity: Site-specific (site_specific)
• Normalization basis: per kg net accepted finished hosiery
• Basis kind: Reference flow (reference_flow)
• Evidence kind: Collected record (collected_record)
• Collection protocol: cp_packaging_records
• Sources: epd-international-pcr-2024-03-apparel

Low-density polyethylene packaging waste (ldpe_packaging_waste)

Record damaged and discarded low-density polyethylene film separately from other polymers, with contamination and actual treatment route documented.

• Selected flow: Low-density polyethylene film packaging waste
• Flow property / unit: Mass / kg
• Amount rule: measured discarded low-density polyethylene film mass
• Value mode: Foreground record (foreground_record)
• Specificity: Site-specific (site_specific)
• Normalization basis: per kg net accepted finished hosiery
• Basis kind: Reference flow (reference_flow)
• Evidence kind: Collected record (collected_record)
• Collection protocol: cp_packaging_records
• Sources: epd-international-pcr-2024-03-apparel

Elementary flows

Process: On-site wastewater treatment (onsite_wastewater_treatment)

Inputs

Product flows

Wet-finishing wastewater received for treatment (wastewater_treatment_input)

Record the internal wastewater stream entering on-site treatment and reconcile its volume and sampled pollutant load with wet-finishing discharge records.

• Selected flow: Hosiery wet-finishing wastewater with declared composition
• Flow property / unit: Volume / m3
• Amount rule: metered influent volume matched to wet-finishing production
• Value mode: Foreground record (foreground_record)
• Specificity: Site-specific (site_specific)
• Normalization basis: per m3 wastewater treated
• Basis kind: Process output (process_output)
• Evidence kind: Collected record (collected_record)
• Collection protocol: cp_wastewater_treatment_records
• Sources: epd-international-pcr-2024-03-apparel

Wastewater-treatment electricity (wastewater_treatment_electricity)

Record electricity consumed by pumping, aeration, dosing, dewatering, and treatment controls under the site supply identity.

• Selected flow: Electricity, grid supply at the hosiery-manufacturing site
• Flow property / unit: Energy / kWh
• Amount rule: submetered treatment-plant consumption reconciled to the site meter
• Value mode: Foreground record (foreground_record)
• Specificity: Site-specific (site_specific)
• Normalization basis: per m3 wastewater treated
• Basis kind: Process output (process_output)
• Evidence kind: Collected record (collected_record)
• Collection protocol: cp_wastewater_treatment_records
• Sources: epd-international-pcr-2024-03-apparel

Sodium hydroxide (sodium_hydroxide_input)

Record sodium hydroxide only when used for pH control or treatment, retaining delivered concentration and active mass.

• Selected flow: Sodium hydroxide, CAS 1310-73-2
• Flow property / unit: Mass / kg
• Amount rule: delivered solution mass multiplied by verified active concentration and reconciled to dosing records
• Value mode: Foreground record (foreground_record)
• Specificity: Site-specific (site_specific)
• Normalization basis: per m3 wastewater treated
• Basis kind: Process output (process_output)
• Evidence kind: Collected record (collected_record)
• Collection protocol: cp_wastewater_treatment_records
• Sources: epd-international-pcr-2024-03-apparel

Waste flows

Elementary flows

Outputs

Product flows

Waste flows

Dewatered wastewater-treatment sludge (dewatered_sludge_output)

Record dewatered sludge with wet mass, dry-matter fraction, hazardous status, and actual treatment destination.

• Selected flow: Dewatered textile wastewater-treatment sludge with declared dry-matter fraction
• Flow property / unit: Mass / kg
• Amount rule: measured wet sludge mass with measured dry-matter fraction reported separately
• Value mode: Foreground record (foreground_record)
• Specificity: Site-specific (site_specific)
• Normalization basis: per m3 wastewater treated
• Basis kind: Process output (process_output)
• Evidence kind: Collected record (collected_record)
• Collection protocol: cp_wastewater_treatment_records
• Sources: epd-international-pcr-2024-03-apparel

Elementary flows

Chemical oxygen demand to freshwater (cod_to_freshwater)

Record chemical oxygen demand discharged to the declared freshwater compartment from matched effluent concentration and volume records.

• Selected flow: Chemical oxygen demand to freshwater
• Flow property / unit: Mass / kg
• Amount rule: matched-period effluent COD concentration multiplied by treated discharge volume with unit conversion
• Value mode: Foreground record (foreground_record)
• Specificity: Site-specific (site_specific)
• Normalization basis: per m3 wastewater treated
• Basis kind: Process output (process_output)
• Evidence kind: Collected record (collected_record)
• Collection protocol: cp_wastewater_treatment_records
• Sources: epd-international-pcr-2024-03-apparel

Total nitrogen to freshwater (total_nitrogen_to_freshwater)

Record total nitrogen discharged to the declared freshwater compartment from matched effluent concentration and volume records.

• Selected flow: Total nitrogen to freshwater
• Flow property / unit: Mass / kg
• Amount rule: matched-period effluent total-nitrogen concentration multiplied by treated discharge volume with unit conversion
• Value mode: Foreground record (foreground_record)
• Specificity: Site-specific (site_specific)
• Normalization basis: per m3 wastewater treated
• Basis kind: Process output (process_output)
• Evidence kind: Collected record (collected_record)
• Collection protocol: cp_wastewater_treatment_records
• Sources: epd-international-pcr-2024-03-apparel

Total phosphorus to freshwater (total_phosphorus_to_freshwater)

Record total phosphorus discharged to the declared freshwater compartment from matched effluent concentration and volume records.

• Selected flow: Total phosphorus to freshwater
• Flow property / unit: Mass / kg
• Amount rule: matched-period effluent total-phosphorus concentration multiplied by treated discharge volume with unit conversion
• Value mode: Foreground record (foreground_record)
• Specificity: Site-specific (site_specific)
• Normalization basis: per m3 wastewater treated
• Basis kind: Process output (process_output)
• Evidence kind: Collected record (collected_record)
• Collection protocol: cp_wastewater_treatment_records
• Sources: epd-international-pcr-2024-03-apparel

7. Allocation and Co-product Handling

rule_id	Applies to	Rule	source_ids
allocation_avoidance	Shared operations and meters	First subdivide by process, line, batch, product, and reporting period and collect direct foreground data. Do not allocate directly measured amounts.	epd-international-pcr-2024-03-apparel; ec-pef-method-2021-2279
allocation_physical	Residual shared utilities or services	If subdivision is not feasible, allocate only the residual shared amount using a documented physical causal driver such as machine time, metered demand, treated volume, or mass throughput; reconcile allocated totals to the source record.	epd-international-pcr-2024-03-apparel; ec-pef-method-2021-2279
allocation_economic_fallback	Multi-output process without a defensible physical relationship	Use reporting-period economic allocation only as a documented fallback, retain price and quantity evidence, and test sensitivity to price variation.	epd-international-pcr-2024-03-apparel
allocation_pairing_and_rework	Pairing rejects, rework, and replacement articles	Assign rework inputs and losses to the product order that caused them when traceable; otherwise use a production-volume-weighted driver within the same hosiery type, size, composition, and period.	mass-balance-identity
allocation_waste_status	Yarn waste, off-spec hosiery, packaging waste, and sludge	Keep waste-treatment burdens with the generating product until documented end-of-waste criteria are met. A sale, recycling collection, or intended recovery alone does not establish a co-product credit.	epd-international-pcr-2024-03-apparel

8. Foreground Data Collection, Calculation, and Quality Rules

Data Collection Protocols

protocol_id	process_id	flow_role	record_type	raw_fields	collection_method	unit	frequency	temporal_coverage	site_scope	aggregation_rule	quality_evidence
cp_yarn_material_balance	hosiery_knitting	each yarn input	bills of materials, receipts, cone issues and returns, stock counts, supplier specifications	product id; yarn id; polymer or fibre; count; construction; colour; recycled content; opening stock; receipts; issues; returns; closing stock; mass	calibrated scales and inventory reconciliation by yarn identity	kg	per lot and work order; monthly stock close	same representative period as knitting output	every knitting site and outsourced operation under control	opening + receipts - returns - closing, assigned through traceable work orders	scale calibration; supplier specification; stock reconciliation; variance log
cp_knitting_output_waste	hosiery_knitting	accepted bodies and each yarn-specific waste	machine, work-order, acceptance, reject, and waste records	machine; product; yarn lot; input mass; accepted body mass; waste mass by material; stock change	calibrated scales and machine-order reconciliation	kg	per work order or shift	representative production period	every knitting line in scope	reconcile yarn inputs to accepted bodies, material-specific wastes, and stock change	scale calibration; signed order close; material-balance residual
cp_assembly_records	toe_closing_assembly	knitted body, sewing thread, accepted assembly, and off-cuts	transfer, issue, work-order, output, and reject records	product; size; input mass; thread issue and return; accepted mass; waste mass; rework	calibrated scales and work-order records	kg; count	per work order	same period as knitting and product output	every assembly line in scope	reconcile input, thread, accepted output, waste, rework, and stock change	scale calibration; work-order trace; acceptance record
cp_wet_finishing_records	wet_finishing_boarding	hosiery input/output, water, and route condition	batch sheets, meters, recipes, dryer and boarding logs	batch; product; input and output mass; moisture; water; temperature; time; machine; finish route	batch records plus calibrated meters and scales	kg; m3; °C; h	per batch; monthly reconciliation	same period as accepted output	every wet-processing, drying, and boarding line in scope	aggregate declared batches and normalize to accepted conditioned output	meter and scale calibration; approved recipe; batch acceptance; water and mass balance
cp_chemical_recipe_records	wet_finishing_boarding	each chemical-specific input	approved recipe, issue, return, stock, and supplier records	chemical identity; CAS; concentration; active content; batch issue; return; opening and closing stock; supplier lot	weighed issue and stock reconciliation; active mass calculated only from verified concentration	kg	per batch; monthly stock close	same period as represented wet processing	every foreground wet-processing site	sum active or delivered mass consistently by chemical; never combine chemicals	approved recipe; SDS; certificate of analysis; scale calibration; stock reconciliation
cp_energy_records	all foreground processes	electricity and purchased steam	meters, invoices, equipment logs, production hours	meter; start and end reading; carrier; quantity; unit; equipment; product order; operating time	submetering preferred; residual shared use allocated by documented causal driver	kWh; MJ	continuous or per shift; monthly reconciliation	same period for all core processes	each site and relevant line	sum metered use; allocate only residual shared use; reconcile to site totals	meter calibration; invoice reconciliation; allocation worksheet; electricity supply evidence
cp_packaging_records	inspection_packaging	each packaging component and packaging waste	bills of material, issue and return logs, component counts, supplier specifications, waste logs	component id; material; grade; unit mass; recycled content; issue; return; packed count; waste mass	verified unit mass and inventory reconciliation by component	kg; count	per packaging order; monthly close	same period as packed output	every packing site	net issue by component normalized to net accepted product; reconcile packaging waste	scale calibration; supplier specification; stock and count reconciliation
cp_product_output_records	inspection_packaging	inspected, paired, accepted, rejected, and reworked hosiery	production, inspection, pairing, scale, and release records	product; hosiery type; size; single or pair convention; count; net mass; moisture; accepted; rejected; reworked; release date	calibrated scale and quality-system records	count; pair; kg	per batch or order	representative production period	all release sites	production-volume-weighted aggregation by product and size stratum; packaging excluded	scale calibration; acceptance criteria; pairing record; release authorization
cp_wastewater_records	wet_finishing_boarding	wastewater leaving wet finishing	discharge meters, sampling and route records	batch; volume; pH; temperature; COD; nitrogen; phosphorus; treatment destination; sampling time	calibrated flow meter and documented sampling	m3; concentration units	continuous volume; sampling at permit or process frequency	matched to represented wet-processing batches	every discharge point in scope	match discharge volume and samples to production periods; disclose unmatched coverage	meter calibration; laboratory report; chain of custody; route evidence
cp_wastewater_treatment_records	onsite_wastewater_treatment	influent, electricity, sodium hydroxide, effluent emissions, and sludge	influent and effluent meters, laboratory results, chemical records, sludge tickets	volume; concentration; chemical solution mass and concentration; electricity; sludge wet mass and dry matter; discharge compartment	calibrated meters, laboratory testing, dosing records, and weighbridge tickets	m3; kg; kWh	continuous volume; permit sampling; per sludge movement	same period as wet-processing production	every on-site treatment unit	water and pollutant balance over matched periods; normalize to treated volume and reference product	meter calibration; laboratory QA; permit record; dosing reconciliation; sludge disposition

Calculation Rules

rule_id	Applies to	Formula or rule	Inputs	Output	source_ids
calc_reference_normalization	Every foreground amount	normalized amount = reporting-period attributable amount / reporting-period net accepted finished-hosiery mass	amount by atomic flow; net accepted product mass	amount per 1 kg reference product	mass-balance-identity
calc_material_consumption	Each yarn, sewing thread, chemical, and packaging component	consumed mass = opening stock + receipts - supplier returns - closing stock; reconcile work-order issues and unexplained variance	stock and transaction records	consumed kg by atomic material identity	mass-balance-identity
calc_item_pair_mass	Count-only output records	net product mass = accepted count or pair count multiplied by measured mean net mass for the same product and size stratum	count; pairing convention; sample masses; production weights	kg net accepted finished hosiery	mass-balance-identity
calc_process_mass_balance	Knitting, assembly, wet finishing, and packaging	residual = inputs + opening work in process - accepted outputs - measured wastes - closing work in process; report moisture or finish add-on separately	measured mass records by atomic flow	process residual and reconciliation statement	mass-balance-identity
calc_active_chemical_mass	Delivered chemical solutions	active chemical mass = delivered solution mass multiplied by verified mass fraction; retain delivered solution amount separately	delivered mass; certificate concentration	kg active chemical	mass-balance-identity
calc_shared_utility	Residual shared meters	allocated utility = residual meter amount multiplied by product causal-driver share; allocated totals shall equal the residual meter amount	source meter; directly assigned amounts; causal driver by product	allocated utility by product	epd-international-pcr-2024-03-apparel; ec-pef-method-2021-2279
calc_effluent_load	COD, total nitrogen, and total phosphorus	discharged load = matched-period concentration multiplied by treated discharge volume with explicit unit conversion	concentration; volume; sample coverage	kg pollutant to declared freshwater compartment	mass-balance-identity

Data Quality Requirements

requirement_id	Applies to	Requirement	Evidence
dq_product_identity	Reference product	Retain hosiery type, single or pair convention, composition percentages, yarn construction, knit structure, size or size mix, net mass, colour, finish, performance claim, moisture condition, route, site, geography, and reporting period.	approved specification; bill of materials; production order; scale and quality records
dq_core_specific_data	All foreground core processes	Use site-specific records for operations under foreground control and ensure all core data represent the same period; disclose and justify deviations.	meters; invoices; production, warehouse, recipe, quality, waste, and treatment records; epd-international-pcr-2024-03-apparel
dq_upstream_representativeness	Yarns, chemicals, packaging, energy, transport, and treatment datasets	Assess fibre or polymer, technology, geography, time, recycled content, and boundary fit; prefer supplier-specific data for main inputs and disclose generic and proxy shares.	supplier datasets; representativeness assessment; sensitivity analysis; epd-international-pcr-2024-03-apparel
dq_completeness	Product system	Demonstrate at least 99% product-content mass and energy coverage and assess all exclusions for environmental relevance.	material and energy reconciliation; exclusion register; sensitivity or expert review; epd-international-pcr-2024-03-apparel
dq_measurement	Mass, counts, energy, water, chemicals, wastes, and emissions	Identify instrument, calibration, unit, sampling frequency, detection limit where applicable, missing-data treatment, and aggregation method.	calibration certificates; laboratory QA; meter, scale, and sampling logs
dq_atomic_identity	Every inventory exchange	Retain one material or substance identity, specification, supplier or route where relevant, and Tiangong UUID only when publicly verified; never combine multiple chemicals, energy carriers, packaging materials, wastes, or emissions in one row.	bill of materials; SDS or specification; supplier record; UUID verification record
dq_allocation	Shared processes	Retain subdivision attempts, the physical causal relationship, driver values, allocated totals, and sensitivity evidence for economic fallback.	allocation worksheet; meter reconciliation; price evidence; sensitivity analysis; epd-international-pcr-2024-03-apparel
dq_waste_route	Every waste flow	Identify composition, mass basis, destination, treatment, carrier, and end-of-waste evidence; do not assume recycling from collection alone.	transfer note; weighbridge record; treatment receipt; end-of-waste evidence
dq_uncertainty_and_gaps	Published dataset	Disclose unresolved UUIDs, proxy data, missing periods, exclusions, material or energy imbalance, allocation, and sensitivity results; do not replace missing foreground amounts with AI-generated ranges.	quality disclosure and review record

9. Validation Rules

rule_id	Applies to	Rule	source_ids
validate_identity	Product identity	Fail if CPC 28210 context, hosiery type, knit or crochet construction, fibre composition, size basis, single or pair convention, net mass, colour or finish, route, site, or reporting period is missing.	epd-international-pcr-2024-03-apparel
validate_reference_flow	Quantitative reference	Fail unless the normalized output is exactly 1 kg net accepted finished hosiery using Product flow c00d32b4-7e02-479b-8cae-d94b50ed1a7a, Mass 93a60a56-a3c8-11da-a746-0800200b9a66, Units of mass 93a60a57-a4c8-11da-a746-0800200c9a66, and unit kg.	mass-balance-identity
validate_pair_item_conversion	Count-based records	Fail if item, pair, dozen, or pack records are converted without a measured product- and size-specific net mass and declared pairing convention.	mass-balance-identity
validate_packaging_separation	Packaging	Fail if packaging mass is included in reference-product mass or if corrugated board, polyethylene film, paper labels, and any other packaging materials are not reported separately.	epd-international-pcr-2024-03-apparel
validate_required_processes	Process coverage	Fail if knitting or crocheting, toe closing or assembly, or inspection, pairing, labelling, and packaging is absent; require documented applicability decisions for wet finishing, boarding, and on-site wastewater treatment.	epd-international-pcr-2024-03-apparel
validate_atomic_flows	Inventory rows	Fail any row whose selected flow is a plural collection, a material or utility selector, or a combined waste or emission stream; every chemical and emission shall retain a specific identity and compartment.	mass-balance-identity
validate_material_balance	Mass-based processes	Fail if inputs, accepted outputs, wastes, rework, moisture or finish add-on, and stock changes do not reconcile within documented measurement uncertainty or if residuals are hidden by normalization.	mass-balance-identity
validate_energy_water_chemicals	Core utilities and wet-processing recipes	Fail if an included operation lacks foreground energy records, if water is unmetered without a documented reconciliation, or if recipe chemicals are aggregated rather than reported by chemical identity and active concentration.	epd-international-pcr-2024-03-apparel
validate_wastewater_emissions	Wet processing and on-site treatment	Fail if wastewater route, matched volume, sampling coverage, sludge destination, or applicable atomic pollutant loads are omitted or if incompatible environmental compartments are combined.	epd-international-pcr-2024-03-apparel; ec-pef-method-2021-2279
validate_completeness	Product system	Fail if the dataset cannot demonstrate 99% product-content mass and energy coverage or does not document and assess cut-offs.	epd-international-pcr-2024-03-apparel
validate_allocation	Shared processes	Fail if allocation bypasses subdivision without justification, lacks a defensible physical relationship, or uses economic allocation without reporting-period values and sensitivity analysis.	epd-international-pcr-2024-03-apparel; ec-pef-method-2021-2279
validate_upstream_links	Purchased inputs and services	Fail if yarns, main chemicals, packaging, energy, transport, or off-site treatment are burden-free or connected to an unassessed generic or proxy dataset.	epd-international-pcr-2024-03-apparel; ec-pef-method-2021-2279
validate_uuid_evidence	UUID-bearing references	Fail any inventory UUID that lacks both a relevant hybrid-search result and a direct public state_code=100 identity read; unresolved rows shall keep their UUID absent and remain disclosed by row_id.	mass-balance-identity
validate_data_quality_disclosure	Published foreground dataset	Fail if reporting period, geography, technology, supplier-specific or generic status, measurement methods, allocation, cut-offs, uncertainty, and unresolved identity references are not disclosed.	epd-international-pcr-2024-03-apparel; ec-pef-method-2021-2279

10. Published Dataset Profile

Field	Value
dataset_role	Foreground manufacturing dataset for finished knitted or crocheted panty hose, tights, stockings, socks, and other hosiery
downstream_use	secondary_dataset; background_dataset for product systems requiring a hosiery-manufacturing stage; source for downstream process and lifecyclemodel projections
allowed_use	Hosiery-manufacturing LCI, supplier-specific or representative production modelling, hotspot analysis, and connection to separately modelled upstream yarn and downstream distribution, use, and end-of-life stages
excluded_use	Claiming a complete cradle-to-grave hosiery result without connected upstream and downstream stages; comparison across products with different function, compression or support, lifetime, pairing loss, size basis, composition, or care scenario without functional equivalence; use as a yarn-production dataset
required_metadata	PCR id and version state; product and flow identity; hosiery and pairing convention; composition; yarn and knit construction; size basis; net unit and pair mass; colour, finish, and claimed performance; included route; site and geography; reporting period; verified reference UUIDs; upstream dataset identities; allocation; cut-offs; data sources
required_quality_disclosure	specific, selected-generic, and proxy data shares; measurement and sampling methods; temporal, geographical, and technological representativeness; material and energy closure; chemical identity; wastewater and waste routes; assumptions; uncertainty; sensitivity; unresolved UUIDs; absence of default quantitative ranges
update_trigger	Change in product construction, composition, yarn supplier, knitting technology, site, energy supply, dye or finish recipe, boarding route, packaging, wastewater or waste treatment, allocation, or data period that materially changes an inventory amount or declared result; correction of errors or stale upstream datasets

11. Data Sources

Source id	Type	Reference	Used for
unsd-cpc-3-0-28210	official_guidance	United Nations Statistics Division, Central Product Classification Version 3.0, code 28210, "Panty hose, tights, stockings, socks and other hosiery, knitted or crocheted." https://unstats.un.org/unsd/classifications/Econ, accessed 2026-08-13.	Official classification identity and product-category scope
epd-international-pcr-2024-03-apparel	standard	International EPD System, PCR 2024:03, Apparel, except fur and leather apparel, version 1.0.0, 2024-05-28, valid to 2028-05-28. https://www.environdec.com/pcr-library/pcr_fe5934d8-029d-4c48-19ea-08db3f138c24 (official PDF: https://api.prod.environdec.com/api/v2/EPDLibrary/Files/e91dc7c8-2c6c-4f16-e74f-08dc7a67eb3e/Data), accessed 2026-08-13.	Explicit inclusion of CPC 2821 hosiery; functional-use qualifiers; upstream, core, and downstream process coverage; manufacturing, quality control, packaging, waste and wastewater treatment; 99% completeness; allocation hierarchy; site-specific core data and disclosure requirements
ec-pef-method-2021-2279	official_guidance	European Commission Recommendation (EU) 2021/2279, Annex I, Product Environmental Footprint Method. https://environment.ec.europa.eu/document/download/680503dc-5a19-4f6a-bb92-84d9bfc8f312_en?filename=Annexes+1+to+2.pdf, accessed 2026-08-13.	Functional unit, reference flow, lifecycle stages, company-specific and secondary data, allocation, data quality, verification, and connection of foreground data to full product footprints
mass-balance-identity	method_factor	Conservation-of-mass identity applied to measured foreground inputs, outputs, wastes, stock changes, active concentrations, and normalized product mass; no external numeric factor.	Reference normalization, material consumption, process reconciliation, active-chemical calculation, pollutant-load calculation, and validation