Balata, gutta-percha, guayule, chicle and similar natural gums in primary forms or in plates, sheets or strip

1. Scope and Applicability

This PCR covers foreground data packages for non-wood natural gums and trans-polyisoprene or related natural gum materials sold in primary forms, blocks, plates, sheets, or strip. It applies to balata, gutta-percha, guayule gum or resin/rubber fractions, chicle, and similar natural gums when the declared product is an unvulcanized primary material rather than a formulated rubber, chewing gum, dental article, adhesive, or finished product.

The foreground boundary normally starts with the declared source stand, plantation, tapping campaign, harvested leaves, shrub biomass, or purchased raw latex/gum lot, and ends with the saleable primary gum at the producer gate. Dataset authors must disclose the botanical source or supplier source category, route, product form, moisture or dry matter basis, and whether resin separation, deresination, solvent extraction, boiling, or sheet/strip forming is included.

2. Product Category Identity

Field	Value
canonical_pcr_id	pcr.agriculture-forestry-and-fishery-products.forestry-and-logging-products.balata-gutta-percha-guayule-chicle-and-similar-natural-gums-in-primary-forms-or-in-plat-e156088a
classification_refs	CPC 3.0:03211 exact - Balata, gutta-percha, guayule, chicle and similar natural gums in primary forms or in plates, sheets or strip
covered_products	Balata; gutta-percha; guayule natural gum, resin, or rubber fraction sold as primary gum material; chicle; similar natural plant gums sold in primary forms, blocks, plates, sheets, or strip
excluded_products	Natural rubber from Hevea when classified as CPC 01950; synthetic rubber and factice; vulcanized or compounded rubber goods; formulated chewing gum base; dental gutta-percha points or devices; adhesives, coatings, and finished articles
representative_product	1 kg saleable dry-basis natural gum primary material at producer gate
production_route	Tapping, leaf/shrub harvest, or raw lot receipt; concentration/coagulation or extraction; impurity removal; drying, pressing, block forming, sheet forming, or strip cutting; packaging for dispatch
market_state	Unvulcanized primary material, usually baled, blocked, sheeted, plated, stripped, or otherwise simply prepared for industrial conversion

3. Reference Flow

Field	Value
What	Saleable balata, gutta-percha, guayule, chicle, or similar natural gum primary material
How much	1 kg net product mass
How well	Product meets the declared commercial grade, product form, moisture or dry matter basis, and impurity specification
How long or cycle	One foreground production batch, tapping campaign, extraction campaign, or annualized campaign normalized to the reference amount
reference_flow_link	Reference product output of the final primary gum production process

Field	Value
Reference amount	1 kg
Reference product flow	Balata, gutta-percha, guayule, chicle and similar natural gums in primary forms or in plates, sheets or strip 907d7b5c-ed6f-43a2-82f8-e1f91e30a37b
Reference flow property	Mass 93a60a56-a3c8-11da-a746-0800200b9a66
Reference unit group	Mass unit group 93a60a57-a4c8-11da-a746-0800200c9a66
Reference unit	kg
Required qualifiers	gum type; botanical or supplier source category; source system; product form; moisture or dry matter basis; resin separation or purification state; production route; geographic origin; allocation method for co-products

When constructing a foreground data package, the items listed in Required qualifiers must be declared in dataset metadata, process notes, reference flow comment, product description, or an equivalent data package field. Missing required qualifiers make the reference flow definition incomplete for that data package.

4. Measurement and Unit Rules

rule_id	Applies to	Required property	Required unit	Rule
reference_mass	Reference product and saleable co-products	Mass 93a60a56-a3c8-11da-a746-0800200b9a66	kg	Report the reference flow as net saleable product mass excluding reusable pallets, drums, or returnable containers.
dry_matter_basis	Gum, latex, leaf, shrub biomass, residue, and product outputs	Mass 93a60a56-a3c8-11da-a746-0800200b9a66	kg dry matter and kg as received	Record moisture or total solids whenever a wet input, latex, coagulum, or dried product is converted to the 1 kg reference product.
product_form_reporting	Reference product	Mass 93a60a56-a3c8-11da-a746-0800200b9a66	kg	Declare whether the reference product is block, plate, sheet, strip, crumb, resin fraction, rubber fraction, or another primary form.
energy_unit_consistency	Electricity, steam, fuel, and process heat	Energy	kWh or MJ	Convert plant energy meters, fuel invoices, and boiler records to kWh or MJ and state whether values are final energy, fuel lower heating value, or delivered heat.
route_specific_yield_check	Tapping, leaf extraction, and guayule extraction processes	Mass 93a60a56-a3c8-11da-a746-0800200b9a66	kg	Compare foreground yields against route-specific evidence or documented campaign records; large deviations require source species, moisture basis, and loss disclosure.

5. System Boundary

Boundary Abstraction

Field	Value
declared_starting_condition	declared_source_stand_or_raw_gum_lot
starting_condition_role	Boundary anchor for the first foreground collection or raw material receipt record.
product_classification_scope	CPC 3.0:03211 natural gums and similar plant gum primary forms only.
recursive_input_rule	If an input is itself CPC 03211 primary natural gum, model it as a purchased raw gum input with an upstream dataset; do not recursively reopen this PCR inside the same foreground process.
upstream_dataset_requirement	Use an upstream dataset for purchased latex, crude gum, harvested leaf, shrub biomass, solvent, packaging, electricity, fuel, water, or transport services that cross into the foreground boundary.
disclosure	Disclose source species or supplier source category, source system, harvesting or tapping route, purchased raw lot share, product form, moisture basis, purification state, co-product treatment, and any excluded establishment, land management, or long-distance transport activities.

Boundary Rules

rule_id	Applies to	Rule	source_ids
boundary_declared_source_or_raw_lot	all foreground data packages	Begin foreground modelling at the declared source stand or raw gum lot, use upstream datasets for each purchased input crossing the boundary, and do not recursively reopen this PCR for a purchased CPC 03211 gum input.

6. Process Inventory Structure

Process Map

process_id	process_name	inclusion	inclusion_condition	role	quantitative_reference
source_harvest_or_raw_lot_receipt	Source harvest, tapping, or raw lot receipt	required	Include for all datasets; use raw lot receipt when the producer buys crude gum, latex, leaves, or shrub biomass.	Establishes source identity and incoming material amount.	kg incoming raw material and kg dry matter per 1 kg reference product
primary_concentration_or_extraction	Primary concentration, coagulation, boiling, or extraction	required	Include the route used for chicle boiling, balata/gutta softening, guayule aqueous or solvent extraction, or comparable natural gum recovery.	Converts raw latex, crude gum, leaves, or shrub biomass into concentrated or separated gum.	kg intermediate gum per 1 kg reference product
purification_forming_and_drying	Purification, drying, pressing, and forming	required	Include when the product is dried, pressed, blocked, sheeted, plated, stripped, or purified before sale.	Produces the declared primary product form.	kg saleable product per 1 kg reference product
packaging_storage_and_dispatch	Packaging, storage, and dispatch preparation	required	Include packaging and on-site storage needed to deliver the product at producer gate.	Records packaging, storage losses, and product dispatch state.	kg packaged saleable product per 1 kg reference product

Process: Source harvest, tapping, or raw lot receipt (source_harvest_or_raw_lot_receipt)

Inputs

Product flows

Source stand, tree, shrub, latex, leaf, or raw gum lot (source_material_input)

The incoming material is recorded according to the declared route. It may be tapped latex, crude gum, harvested leaves, guayule shrub biomass, or a purchased raw gum lot.

• Selected flow: Natural gum source material
• Flow property / unit: Mass / kg
• Amount rule: measured incoming mass and dry matter or total solids content
• Value mode: Foreground record (foreground_record)
• Specificity: Site-specific (site_specific)
• Normalization basis: per 1 kg saleable reference product
• Basis kind: Reference flow (reference_flow)
• Evidence kind: Collected record (collected_record)
• Collection protocol: cp_source_material_records
• Sources: fao-nwfp-6-chicle; fao-nwfp-6-balata; fao-nwfp-6-gutta-percha; dehghanizadeh-2021-guayule-resin
• Range: Initial source-material QA screen
  • Range role: QA guardrail (qa_guardrail)
  • Lower: 1.0
  • Upper: 100
  • Unit: kg dry matter
  • Basis: per 1 kg saleable reference product
  • Basis kind: Reference flow (reference_flow)
  • Evidence kind: Reasoned estimate (reasoned_estimate)

Field fuel and collection energy (field_collection_energy)

Fuel, electricity, or animal/mechanical collection services are included when directly used for tapping, shrub harvest, leaf collection, in-field chopping, or raw lot receiving.

• Selected flow: Field collection energy
• Flow property / unit: Energy / MJ or kWh
• Amount rule: fuel or electricity measured from meters, invoices, logbooks, or equipment-hour calculations
• Value mode: Foreground record (foreground_record)
• Specificity: Site-specific (site_specific)
• Normalization basis: per 1 kg saleable reference product
• Basis kind: Reference flow (reference_flow)
• Evidence kind: Collected record (collected_record)
• Collection protocol: cp_energy_records
• Sources:
• Range: Initial field energy screen
  • Range role: QA guardrail (qa_guardrail)
  • Lower: 0
  • Upper: 5
  • Unit: MJ
  • Basis: per 1 kg saleable reference product
  • Basis kind: Reference flow (reference_flow)
  • Evidence kind: Reasoned estimate (reasoned_estimate)

Waste flows

Uncollected or rejected source biomass (rejected_source_biomass)

Rejected bark, leaves, twigs, shrub material, or contaminated raw gum is recorded when it leaves the foreground system as waste or is returned to the source area.

• Selected flow: Biogenic plant residue
• Flow property / unit: Mass / kg dry matter
• Amount rule: measured or calculated rejected biomass after source collection
• Value mode: Foreground record (foreground_record)
• Specificity: Site-specific (site_specific)
• Normalization basis: per 1 kg saleable reference product
• Basis kind: Reference flow (reference_flow)
• Evidence kind: Collected record (collected_record)
• Collection protocol: cp_residue_records
• Sources:
• Range: Initial rejected biomass screen
  • Range role: QA guardrail (qa_guardrail)
  • Lower: 0
  • Upper: 50
  • Unit: kg dry matter
  • Basis: per 1 kg saleable reference product
  • Basis kind: Reference flow (reference_flow)
  • Evidence kind: Reasoned estimate (reasoned_estimate)

Elementary flows

Source-area land occupation disclosure (source_area_occupation)

Land occupation is reported when the foreground dataset represents plantation or managed source-area operation rather than only purchased raw lot receipt.

• Selected flow: Land occupation, forestry or perennial shrub production
• Flow property / unit: Area-time / m2a
• Amount rule: annualized productive source area allocated to harvested source material
• Value mode: Calculated value (calculated_value)
• Specificity: Site-specific (site_specific)
• Normalization basis: per 1 kg saleable reference product
• Basis kind: Reference flow (reference_flow)
• Evidence kind: Calculated from collection (calculated_from_collection)
• Collection protocol: cp_source_area_records
• Sources:
• Range: Initial source-area occupation screen
  • Range role: QA guardrail (qa_guardrail)
  • Lower: 0
  • Upper: 1000
  • Unit: m2a
  • Basis: per 1 kg saleable reference product
  • Basis kind: Reference flow (reference_flow)
  • Evidence kind: Reasoned estimate (reasoned_estimate)

Outputs

Product flows

Raw gum, latex, leaves, or shrub biomass for processing (raw_material_to_processing)

The measured collected or received material is transferred to the primary concentration or extraction process.

• Selected flow: Raw natural gum material
• Flow property / unit: Mass / kg as received and kg dry matter
• Amount rule: measured transferred mass after source collection or receipt
• Value mode: Foreground record (foreground_record)
• Specificity: Site-specific (site_specific)
• Normalization basis: per source collection or receipt process output
• Basis kind: Process output (process_output)
• Evidence kind: Collected record (collected_record)
• Collection protocol: cp_source_material_records
• Sources:
• Range: Initial raw material transfer screen
  • Range role: QA guardrail (qa_guardrail)
  • Lower: 1.0
  • Upper: 100
  • Unit: kg dry matter
  • Basis: per 1 kg saleable reference product
  • Basis kind: Reference flow (reference_flow)
  • Evidence kind: Reasoned estimate (reasoned_estimate)

Waste flows

Elementary flows

Process: Primary concentration, coagulation, boiling, or extraction (primary_concentration_or_extraction)

Inputs

Product flows

Raw material charged to recovery (raw_material_charged)

Raw latex, crude gum, leaves, shrub biomass, or purchased raw gum is charged to the recovery route.

• Selected flow: Raw natural gum material
• Flow property / unit: Mass / kg dry matter
• Amount rule: measured raw material charged to the concentration, boiling, coagulation, or extraction equipment
• Value mode: Foreground record (foreground_record)
• Specificity: Site-specific (site_specific)
• Normalization basis: per 1 kg saleable reference product
• Basis kind: Reference flow (reference_flow)
• Evidence kind: Collected record (collected_record)
• Collection protocol: cp_source_material_records
• Sources:
• Range: Initial charged raw material screen
  • Range role: QA guardrail (qa_guardrail)
  • Lower: 1.0
  • Upper: 100
  • Unit: kg dry matter
  • Basis: per 1 kg saleable reference product
  • Basis kind: Reference flow (reference_flow)
  • Evidence kind: Reasoned estimate (reasoned_estimate)

Process water (process_water_input)

Process water is included when used for boiling, hot-water softening, washing, aqueous extraction, slurry handling, or cooling that crosses the foreground boundary.

• Selected flow: Process water ec205030-248c-496f-9cf2-06d9d26dc6ff
• Flow property / unit: Mass / kg
• Amount rule: measured make-up water consumption net of internal recirculation
• Value mode: Foreground record (foreground_record)
• Specificity: Site-specific (site_specific)
• Normalization basis: per 1 kg saleable reference product
• Basis kind: Reference flow (reference_flow)
• Evidence kind: Collected record (collected_record)
• Collection protocol: cp_water_records
• Sources:
• Range: Initial process water screen
  • Range role: QA guardrail (qa_guardrail)
  • Lower: 0
  • Upper: 100
  • Unit: kg
  • Basis: per 1 kg saleable reference product
  • Basis kind: Reference flow (reference_flow)
  • Evidence kind: Reasoned estimate (reasoned_estimate)

Solvent, coagulant, or separation aid (separation_aid_input)

Solvents, acids, salts, alkalis, filter aids, or other separation aids are included only when used in the declared route.

• Selected flow: Solvent, coagulant, or process aid
• Flow property / unit: Mass / kg
• Amount rule: measured purchased or consumed quantity by material name and concentration
• Value mode: Foreground record (foreground_record)
• Specificity: Product-specific (product_specific)
• Normalization basis: per 1 kg saleable reference product
• Basis kind: Reference flow (reference_flow)
• Evidence kind: Collected record (collected_record)
• Collection protocol: cp_auxiliary_material_records
• Sources: dehghanizadeh-2021-guayule-resin
• Range: Initial separation aid screen
  • Range role: QA guardrail (qa_guardrail)
  • Lower: 0
  • Upper: 10
  • Unit: kg
  • Basis: per 1 kg saleable reference product
  • Basis kind: Reference flow (reference_flow)
  • Evidence kind: Reasoned estimate (reasoned_estimate)

Process heat and electricity (recovery_energy_input)

Energy for boiling, extraction, agitation, centrifugation, evaporation, solvent recovery, and pumps is included in the recovery process.

• Selected flow: Electricity, medium voltage 2eb3b2fd-6511-4a22-9018-768024a5b5a6
• Flow property / unit: Energy / kWh or MJ
• Amount rule: measured energy use or calculated equipment energy allocated to the recovery campaign
• Value mode: Foreground record (foreground_record)
• Specificity: Site-specific (site_specific)
• Normalization basis: per 1 kg saleable reference product
• Basis kind: Reference flow (reference_flow)
• Evidence kind: Collected record (collected_record)
• Collection protocol: cp_energy_records
• Sources: dehghanizadeh-2021-guayule-resin
• Range: Initial recovery energy screen
  • Range role: QA guardrail (qa_guardrail)
  • Lower: 0.1
  • Upper: 100
  • Unit: MJ
  • Basis: per 1 kg saleable reference product
  • Basis kind: Reference flow (reference_flow)
  • Evidence kind: Reasoned estimate (reasoned_estimate)

Waste flows

Elementary flows

Outputs

Product flows

Concentrated or separated gum intermediate (gum_intermediate_output)

The intermediate gum, coagulum, rubber fraction, resin fraction, or crude gutta fraction is recorded before final drying and forming.

• Selected flow: Natural gum intermediate
• Flow property / unit: Mass / kg dry matter
• Amount rule: measured intermediate output, including moisture or solids basis
• Value mode: Foreground record (foreground_record)
• Specificity: Product-specific (product_specific)
• Normalization basis: per recovery process output
• Basis kind: Process output (process_output)
• Evidence kind: Collected record (collected_record)
• Collection protocol: cp_product_quality_records
• Sources:
• Range: Initial gum intermediate output screen
  • Range role: QA guardrail (qa_guardrail)
  • Lower: 1.0
  • Upper: 10
  • Unit: kg dry matter
  • Basis: per 1 kg saleable reference product
  • Basis kind: Reference flow (reference_flow)
  • Evidence kind: Reasoned estimate (reasoned_estimate)

Waste flows

Wastewater from washing or boiling (recovery_wastewater)

Wastewater is recorded when water leaves the recovery process for treatment, discharge, or off-site disposal.

• Selected flow: Process wastewater
• Flow property / unit: Volume / m3 or Mass / kg
• Amount rule: measured discharge or water-balance residual after recirculation
• Value mode: Calculated value (calculated_value)
• Specificity: Site-specific (site_specific)
• Normalization basis: per 1 kg saleable reference product
• Basis kind: Reference flow (reference_flow)
• Evidence kind: Calculated from collection (calculated_from_collection)
• Collection protocol: cp_water_records
• Sources:
• Range: Initial wastewater screen
  • Range role: QA guardrail (qa_guardrail)
  • Lower: 0
  • Upper: 100
  • Unit: kg
  • Basis: per 1 kg saleable reference product
  • Basis kind: Reference flow (reference_flow)
  • Evidence kind: Reasoned estimate (reasoned_estimate)

Bagasse, spent leaves, resinous residue, or extraction solids (recovery_solid_residue)

Solid residues from leaf extraction, shrub extraction, filtering, or crude gum cleaning are recorded by dry matter and disposal or beneficial-use route.

• Selected flow: Biogenic extraction residue
• Flow property / unit: Mass / kg dry matter
• Amount rule: measured residue generation and fate
• Value mode: Foreground record (foreground_record)
• Specificity: Route-specific (route_specific)
• Normalization basis: per 1 kg saleable reference product
• Basis kind: Reference flow (reference_flow)
• Evidence kind: Collected record (collected_record)
• Collection protocol: cp_residue_records
• Sources: dehghanizadeh-2021-guayule-resin
• Range: Initial recovery residue screen
  • Range role: QA guardrail (qa_guardrail)
  • Lower: 0
  • Upper: 100
  • Unit: kg dry matter
  • Basis: per 1 kg saleable reference product
  • Basis kind: Reference flow (reference_flow)
  • Evidence kind: Reasoned estimate (reasoned_estimate)

Elementary flows

Evaporated water from concentration (evaporated_water)

Water evaporated during boiling, concentration, or drying is reported as a water-balance output when material.

• Selected flow: Water vapour to air
• Flow property / unit: Mass / kg
• Amount rule: calculated from water balance and moisture measurements
• Value mode: Calculated value (calculated_value)
• Specificity: Site-specific (site_specific)
• Normalization basis: per 1 kg saleable reference product
• Basis kind: Reference flow (reference_flow)
• Evidence kind: Calculated from collection (calculated_from_collection)
• Collection protocol: cp_product_quality_records
• Sources:
• Range: Initial evaporated water screen
  • Range role: QA guardrail (qa_guardrail)
  • Lower: 0
  • Upper: 100
  • Unit: kg
  • Basis: per 1 kg saleable reference product
  • Basis kind: Reference flow (reference_flow)
  • Evidence kind: Reasoned estimate (reasoned_estimate)

Process: Purification, drying, pressing, and forming (purification_forming_and_drying)

Inputs

Product flows

Gum intermediate for final forming (gum_intermediate_input)

The intermediate gum material is fed to final drying, purification, pressing, block forming, sheet forming, or strip cutting.

• Selected flow: Natural gum intermediate
• Flow property / unit: Mass / kg dry matter
• Amount rule: measured intermediate input to final finishing
• Value mode: Foreground record (foreground_record)
• Specificity: Product-specific (product_specific)
• Normalization basis: per 1 kg saleable reference product
• Basis kind: Reference flow (reference_flow)
• Evidence kind: Collected record (collected_record)
• Collection protocol: cp_product_quality_records
• Sources:
• Range: Initial gum intermediate input screen
  • Range role: QA guardrail (qa_guardrail)
  • Lower: 1.0
  • Upper: 10
  • Unit: kg dry matter
  • Basis: per 1 kg saleable reference product
  • Basis kind: Reference flow (reference_flow)
  • Evidence kind: Reasoned estimate (reasoned_estimate)

Finishing energy (finishing_energy_input)

Energy for drying, pressing, rolling, cutting, cooling, and ventilation is included.

• Selected flow: Electricity, medium voltage 2eb3b2fd-6511-4a22-9018-768024a5b5a6
• Flow property / unit: Energy / kWh or MJ
• Amount rule: measured energy use for final finishing or allocated equipment energy
• Value mode: Foreground record (foreground_record)
• Specificity: Site-specific (site_specific)
• Normalization basis: per 1 kg saleable reference product
• Basis kind: Reference flow (reference_flow)
• Evidence kind: Collected record (collected_record)
• Collection protocol: cp_energy_records
• Sources:
• Range: Initial finishing energy screen
  • Range role: QA guardrail (qa_guardrail)
  • Lower: 0.1
  • Upper: 50
  • Unit: MJ
  • Basis: per 1 kg saleable reference product
  • Basis kind: Reference flow (reference_flow)
  • Evidence kind: Reasoned estimate (reasoned_estimate)

Waste flows

Elementary flows

Outputs

Product flows

Saleable primary natural gum product (saleable_primary_gum_product)

The reference product is the saleable primary natural gum in the declared form and quality state.

• Selected flow: Balata, gutta-percha, guayule, chicle and similar natural gums in primary forms or in plates, sheets or strip 907d7b5c-ed6f-43a2-82f8-e1f91e30a37b
• Flow property / unit: Mass / kg
• Amount rule: 1 kg reference product at declared moisture or dry matter basis
• Value mode: Fixed value (fixed_value)
• Specificity: Product-specific (product_specific)
• Normalization basis: reference flow
• Basis kind: Reference flow (reference_flow)
• Evidence kind: Identity reference (identity_reference)
• Collection protocol: cp_product_quality_records
• Sources:
• Range: Reference product identity check
  • Range role: Allowed range (allowed_range)
  • Lower: 1
  • Upper: 1
  • Unit: kg
  • Basis: reference flow
  • Basis kind: Reference flow (reference_flow)
  • Evidence kind: Method formula (method_formula)
  • Sources: iso-14044-2006

Waste flows

Off-grade gum and trimming waste (off_grade_gum_waste)

Off-grade gum, trimmings, fines, contaminated gum, or rejected sheets are recorded by fate.

• Selected flow: Off-grade natural gum waste
• Flow property / unit: Mass / kg
• Amount rule: measured rejected product and declared recycling, rework, energy recovery, or disposal route
• Value mode: Foreground record (foreground_record)
• Specificity: Site-specific (site_specific)
• Normalization basis: per 1 kg saleable reference product
• Basis kind: Reference flow (reference_flow)
• Evidence kind: Collected record (collected_record)
• Collection protocol: cp_residue_records
• Sources:
• Range: Initial off-grade gum screen
  • Range role: QA guardrail (qa_guardrail)
  • Lower: 0
  • Upper: 1
  • Unit: kg
  • Basis: per 1 kg saleable reference product
  • Basis kind: Reference flow (reference_flow)
  • Evidence kind: Reasoned estimate (reasoned_estimate)

Elementary flows

Process: Packaging, storage, and dispatch preparation (packaging_storage_and_dispatch)

Inputs

Product flows

Primary packaging material (primary_packaging_input)

Packaging is included when bags, liners, cartons, drums, straps, labels, or non-returnable pallets are supplied with the saleable product.

• Selected flow: Packaging material
• Flow property / unit: Mass / kg
• Amount rule: measured packaging issued to the product lot, excluding reusable packaging when separately tracked
• Value mode: Foreground record (foreground_record)
• Specificity: Product-specific (product_specific)
• Normalization basis: per 1 kg saleable reference product
• Basis kind: Reference flow (reference_flow)
• Evidence kind: Collected record (collected_record)
• Collection protocol: cp_packaging_records
• Sources:
• Range: Initial packaging mass screen
  • Range role: QA guardrail (qa_guardrail)
  • Lower: 0
  • Upper: 0.5
  • Unit: kg
  • Basis: per 1 kg saleable reference product
  • Basis kind: Reference flow (reference_flow)
  • Evidence kind: Reasoned estimate (reasoned_estimate)

Storage and handling energy (storage_handling_energy)

Energy for warehouses, drying rooms, ventilation, forklifts, conveyors, and handling equipment is included when used before producer-gate dispatch.

• Selected flow: Electricity, medium voltage 2eb3b2fd-6511-4a22-9018-768024a5b5a6
• Flow property / unit: Energy / kWh or MJ
• Amount rule: measured or allocated storage and handling energy
• Value mode: Foreground record (foreground_record)
• Specificity: Site-specific (site_specific)
• Normalization basis: per 1 kg saleable reference product
• Basis kind: Reference flow (reference_flow)
• Evidence kind: Collected record (collected_record)
• Collection protocol: cp_energy_records
• Sources:
• Range: Initial storage and handling energy screen
  • Range role: QA guardrail (qa_guardrail)
  • Lower: 0
  • Upper: 10
  • Unit: MJ
  • Basis: per 1 kg saleable reference product
  • Basis kind: Reference flow (reference_flow)
  • Evidence kind: Reasoned estimate (reasoned_estimate)

Waste flows

Elementary flows

Outputs

Product flows

Packaged product at producer gate (packaged_product_at_gate)

The packaged saleable primary gum product is ready for dispatch at the producer gate.

• Selected flow: Balata, gutta-percha, guayule, chicle and similar natural gums in primary forms or in plates, sheets or strip 907d7b5c-ed6f-43a2-82f8-e1f91e30a37b
• Flow property / unit: Mass / kg
• Amount rule: net product mass equals the reference product; packaging mass is not part of the reference amount
• Value mode: Fixed value (fixed_value)
• Specificity: Product-specific (product_specific)
• Normalization basis: reference flow
• Basis kind: Reference flow (reference_flow)
• Evidence kind: Identity reference (identity_reference)
• Collection protocol: cp_product_quality_records
• Sources:
• Range: Packaged product identity check
  • Range role: Allowed range (allowed_range)
  • Lower: 1
  • Upper: 1
  • Unit: kg
  • Basis: reference flow
  • Basis kind: Reference flow (reference_flow)
  • Evidence kind: Method formula (method_formula)
  • Sources: iso-14044-2006

Waste flows

Elementary flows

7. Allocation and Co-product Handling

If the foreground process produces only the declared primary gum product and internal residues are discarded, no allocation is required. If guayule rubber, guayule resin, bagasse, purified gutta fraction, resinous fraction, fuel residue, or another co-product leaves the system with economic value, allocate shared collection, extraction, and finishing burdens by dry mass as the default physical allocation. Use economic allocation only when the co-products have materially different functions and sale prices are documented for the same campaign. Internal rework is not a co-product; record it as a loop or yield loss. Residues used internally for process heat displace purchased energy only when measured and disclosed.

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_source_material_records	source_harvest_or_raw_lot_receipt	source material input and raw material transfer	harvest, tapping, receiving, or purchase record	species_or_source_category; source_system; lot_id; as_received_mass; moisture_or_solids; source_location; harvest_or_receipt_date	weighbridge, batch sheet, receiving note, tapping log, or harvest record	kg and percent moisture or solids	each lot or campaign	representative production year or declared campaign	source area, supplier lot, or receiving site	sum lots and convert to dry matter where required	calibrated scale records, supplier certificates, moisture tests, and lot traceability
cp_source_area_records	source_harvest_or_raw_lot_receipt	source area occupation	land management or source-area record	productive_area; source_system; harvestable_area_share; campaign_duration; yield_to_processing	land register, plantation block record, concession record, or supplier declaration	ha, m2a, kg dry matter	annual or campaign	representative production year	source stand, plantation block, or declared supplier source	allocate source area to harvested dry matter or purchased raw lot	source map, land record, management plan, or supplier statement
cp_energy_records	all processes	fuel, electricity, steam, and process heat	meter, invoice, boiler log, fuel issue, or equipment-hour record	energy_carrier; quantity; unit; meter_scope; allocation_basis; process_id; date	meter reading, invoice reconciliation, or equipment-hour calculation	kWh, MJ, kg fuel, L fuel	monthly or campaign	representative production year or campaign	plant, field crew, extraction line, finishing line, or storage area	allocate shared energy by metered sub-process first, then runtime, mass throughput, or dry product output	meter calibration, invoice, fuel log, and allocation worksheet
cp_water_records	primary_concentration_or_extraction	process water and wastewater	water meter, batch water sheet, or wastewater record	make_up_water; recycled_water; discharge_volume; treatment_route; process_id; date	meter reading or water balance	kg or m3	batch, monthly, or campaign	representative production year or campaign	extraction, boiling, washing, cooling, and effluent treatment systems	net make-up water plus discharge water balance per reference product	meter records, wastewater manifest, treatment logs, and water-balance reconciliation
cp_auxiliary_material_records	primary_concentration_or_extraction	solvent, coagulant, and process aid	purchase, issue, or batch recipe record	material_name; concentration_or_grade; quantity_issued; recovered_quantity; loss_quantity; supplier; process_id	inventory issue, recipe sheet, or solvent recovery log	kg	each batch or campaign	representative production year or campaign	extraction or purification line	net consumed material equals issued minus recovered/reused stock	purchase record, SDS, batch sheet, and recovery log
cp_product_quality_records	primary_concentration_or_extraction; purification_forming_and_drying; packaging_storage_and_dispatch	intermediate and final product quality	production, laboratory, and finished-goods record	product_form; gum_type; moisture_or_solids; impurity_content; net_product_mass; off_grade_mass; lot_id	batch sheet, lab test, finished-goods record	kg, percent moisture or solids	each lot	representative production year or campaign	production line and finished-goods warehouse	sum conforming net product and normalize all flows to 1 kg reference product	lab report, certificate of analysis, scale record, and finished-goods ledger
cp_residue_records	all processes	rejected biomass, bagasse, spent leaves, wastewater sludge, off-grade gum, and packaging waste	waste, residue, or by-product record	residue_type; quantity; moisture_or_solids; fate; sale_or_disposal_route; internal_reuse_flag	waste manifest, residue collection record, by-product sales note, or internal reuse log	kg and percent moisture or solids	batch, monthly, or campaign	representative production year or campaign	field, extraction, finishing, storage, and waste handling areas	sum by fate; convert to dry matter where relevant; link valuable co-products to allocation rule	waste manifest, by-product invoice, disposal ticket, and internal reuse record
cp_packaging_records	packaging_storage_and_dispatch	primary packaging input	packaging issue or bill of materials record	packaging_material; unit_mass; units_used; reusable_flag; supplier; product_lot	packaging BOM, warehouse issue, or supplier record	kg	lot or monthly	representative production year or campaign	packaging area and finished-goods warehouse	sum non-returnable packaging per net product mass	packaging BOM, supplier specification, and stock issue record

Calculation Rules

rule_id	Applies to	Formula or rule	Inputs	Output	source_ids
normalize_to_reference_product	all inventory rows	row amount per kg reference product = campaign row amount / conforming net saleable product mass	row amount; conforming product mass from cp_product_quality_records	normalized inventory amount per 1 kg reference product
convert_to_dry_matter	source material, residues, and intermediate products	dry matter mass = as-received mass * (1 - moisture fraction) or as-received mass * solids fraction	as_received_mass; moisture_or_solids	kg dry matter
water_balance_check	process water and wastewater	wastewater or evaporated water is reconciled from make-up water, recycled water, product moisture change, and measured discharge	make_up_water; recycled_water; product moisture; discharge_volume	water balance and unreconciled loss
co_product_allocation	processes with saleable co-products	allocate shared burdens by dry mass unless documented campaign prices justify economic allocation	shared process burdens; dry mass of saleable co-products; prices when used	allocation factors by co-product	iso-14044-2006
guayule_fraction_check	guayule routes	compare declared resin/rubber fraction yields with cited guayule resin and rubber extraction literature; deviations require explanation	dry shrub input; resin fraction; rubber fraction; bagasse	QA flag or accepted route-specific yield	dehghanizadeh-2021-guayule-resin

Data Quality Requirements

requirement_id	Applies to	Requirement	Evidence
dq_product_identity	reference product	Declare gum type, botanical or supplier source category, product form, purification state, and moisture or dry matter basis.	finished-goods record, certificate of analysis, supplier declaration, or product specification
dq_source_traceability	source material	Trace source material to source stand, plantation block, supplier lot, or purchased raw gum lot.	harvest log, tapping record, supplier certificate, receiving note, or concession/management record
dq_mass_balance	source material, intermediate, final product, and residues	The dry-matter mass balance from source input to final product, co-products, residues, and losses must be reconcilable for each campaign.	batch sheets, lab moisture tests, product ledger, and residue records
dq_energy_water_boundary	energy and water	Energy and water records must distinguish field collection, recovery/extraction, finishing, and storage where material; allocation assumptions must be documented.	meters, invoices, boiler logs, water balance, and allocation worksheet
dq_co_product_allocation	co-products and residues	Co-product allocation must use dry mass by default or documented economic allocation with same-campaign prices.	co-product mass records, by-product sales invoices, and allocation calculation
dq_temporal_representativeness	foreground dataset	Use at least one representative annual cycle or a declared production campaign; seasonal tapping or harvest campaigns must be identified.	production calendar, campaign records, and data coverage statement

9. Validation Rules

• The dataset is invalid if it omits the required product qualifiers, especially gum type, product form, moisture basis, source system, and production route.
• The reference flow must be 1 kg net saleable product mass. Packaging and reusable containers are not part of the reference product mass.
• The dry-matter mass balance must reconcile source material, product, co-products, residues, and moisture losses. Unreconciled dry-matter loss above 5 percent of source dry matter requires explanation.
• Purchased raw gum, latex, leaves, shrub biomass, solvents, process aids, packaging, electricity, fuels, and transport services must be linked to upstream datasets when they cross the foreground boundary.
• Chicle routes must disclose tapping interval assumptions and whether tree damage or stand management activities are included.
• Gutta-percha routes must disclose whether material comes from tapping, leaves, prunings, crude blocks, or purchased raw material.
• Guayule routes must disclose aqueous or solvent extraction, resin/rubber separation state, bagasse treatment, and solvent recovery where applicable.
• Balata routes must disclose whether downstream gutta/resin separation is included or excluded.

10. Published Dataset Profile

Field	Value
dataset_role	unit_process
downstream_use	secondary_dataset; background_dataset
allowed_use	Modelling producer-gate primary natural gum materials in foreground product systems when the declared gum type, form, source system, route, and moisture basis match.
excluded_use	Finished chewing gum, vulcanized rubber products, synthetic rubber, dental devices, formulated adhesives or coatings, and natural rubber CPC 01950 unless separately mapped.
required_metadata	gum type; botanical or supplier source category; CPC reference; product form; moisture or dry matter basis; source system; production route; location; time period; allocation method; co-product treatment; upstream dataset links
required_quality_disclosure	source traceability level, dry-matter mass balance closure, energy and water allocation basis, solvent recovery treatment, residue fate, co-product allocation, and unresolved UUID or unit support gaps
update_trigger	Update when reviewed Tiangong UUIDs, source-specific yield evidence, solvent/extraction technology evidence, CPC mapping, or forestry/non-wood forest product review changes the rule.

11. Data Sources

Source id	Type	Reference	Used for
un-cpc-3-0	official_guidance	United Nations Statistics Division, Central Product Classification Version 3.0, code 03211	Product category identity and classification reference
fao-nwfp-6-chicle	handbook	FAO Non-Wood Forest Products 6, Chicle profile, Pl@ntUse mirror, https://plantuse.plantnet.org/en/Chicle_%28FAO%2C_NWFP_6%29	Chicle source identity, tapping/collection route, boiling and block-forming process evidence
fao-nwfp-6-balata	handbook	FAO Non-Wood Forest Products 6, Balata profile, Pl@ntUse mirror, https://plantuse.plantnet.org/en/Balata_%28FAO%2C_NWFP_6%29	Balata source identity, tapping yield context, and downstream separation boundary
fao-nwfp-6-gutta-percha	handbook	FAO Non-Wood Forest Products 6, Gutta-percha profile, Pl@ntUse mirror, https://plantuse.plantnet.org/en/Gutta_percha_%28FAO%2C_NWFP_6%29	Gutta-percha source routes, leaf/pruning harvest, hot-water softening, storage, and purification context
dehghanizadeh-2021-guayule-resin	literature	Dehghanizadeh et al. 2021, "Guayule (Parthenium argentatum) resin: A review of chemistry, extraction techniques, and applications", Industrial Crops and Products 165, 113410, https://doi.org/10.1016/j.indcrop.2021.113410	Guayule extraction routes, rubber/resin/bagasse co-products, and route-specific yield QA
szczepanowska-akhmedov-2023-polyisoprenes	literature	Szczepanowska and Akhmedov 2023, "Gutta percha, natural rubber and balata-chemical characterization of polyisoprenes in the context of cultural heritage", Heritage Science 11, 125, https://doi.org/10.1186/s40494-023-00954-z	Material identity and distinction among gutta-percha, balata, and natural rubber polyisoprenes
iso-14044-2006	standard	ISO 14044:2006, Environmental management - Life cycle assessment - Requirements and guidelines	Allocation hierarchy, data quality, and LCA reporting basis