Reconciliation Methods for Yield Loss and Moisture Distortion in Reclaimed Paper Ledgers
Reconciling reclaimed paper ledgers requires converting scale intake weights to bone-dry fiber mass using core probe testing per ISO 287.
Chain of Custody Percentage Method
Certification Pathway
Wood fibre tracking systems in global supply chains utilize distinct volume-control mechanisms to verify sustainable sourcing claims. Under the chain of custody percentage method, a specific proportion of certified material is blended with non-certified material in the production batch. This approach allows the manufacturer to apply a corresponding percentage claim to the final output of paper or paperboard.
It applies exclusively when there is a continuous input of both certified and controlled wood fibres.
Mass Apportionment
Accounting rules for this system require a strict balance of certified inputs against the volume of finished products leaving the mill. Mill managers track these ratios over a specified claim period, which typically spans a single month of production. This accounting ensures that the volume of certified paper sold matches the volume of certified raw materials purchased.
Such precision prevents the inflation of sustainable product claims in the market.
Label Claim
Marketing of paperboard packaging depends on these verified percentage figures to satisfy corporate procurement mandates. The chain of custody percentage method dictates whether a product can carry a specific percentage-based claim label. This label informs buyers of the proportion of recycled or certified wood fibre present in the packaging material.