ISO 22095 Mass Balance Chain of Custody Audit Requirements
ISO 22095 mass balance audits demand strict site boundaries, verified baseline yield conversions, and zero negative credit balances across accounting periods.
Mass Conservation Ledger
Meaning
An accounting system monitors the entry and exit of certified and non-certified polymer materials across a manufacturing facility. A mass conservation ledger tracks the balance of sustainable feedstocks to ensure that the volume of certified output never exceeds the input of renewable raw materials. Moulders use this tool to demonstrate compliance with voluntary certification standards.
This bookkeeping method prevents the double-counting of recycled resin attributes within the supply chain.
Material Efficiency
Sourcing teams record every shipment of certified resin to maintain a correct balance between virgin and recycled polymer stocks. Within the mass conservation ledger, the physical losses during compounding are subtracted to keep the records accurate. Since high-performance moldings require precise resin blending, any discrepancy in the book value can lead to incorrect dosing of additives or pigments.
Correct registration guarantees that each batch holds the specified sustainable percentage. If the ledger is neglected, processors risk claiming sustainable credits for material that was actually lost as scrap during purging cycles.
Production Limit
The physical limitations of silo storage and extruder feed lines require structured tracking intervals. In the mass conservation ledger, material transfers must be booked in real time to prevent credit deficits during periods of high production volume. If the compounding line runs out of certified feedstock, the ledger must reflect this immediately by halting the issuance of certified credits.
This alignment ensures that the physical process and the digital record remain synchronized.
Financial Consequence
Audit failures due to accounting discrepancies result in severe financial penalties and the potential loss of recycled certifications. The mass conservation ledger protects the market value of the molded parts by providing a verifiable paper trail for buyers. Without this verified record, parts cannot be sold with a sustainability premium.