Mass Balance
Inventory processes compare the actual weight of textile goods received against the weights recorded on the shipping documents and the original orders. Net weight reconciliation accounts for any differences that might arise from moisture loss and packaging errors. This calculation is a fundamental part of the financial settlement between a yarn spinner and a weaving mill.
Moisture Correction
Because cotton and wool are hygroscopic, the net weight reconciliation must often involve a calculation to adjust the weight to a standard moisture regain. A shipment that leaves a humid port may weigh less upon arrival in a dry climate, even if no material was lost. By calculating the oven-dry weight and adding the commercial regain allowance, both parties can agree on a fair billing mass.
This adjustment prevents disputes over weight shortages that are caused by environmental factors and are unrelated to theft.
Tare Allowance
Deducting the weight of cones, tubes, boxes and pallets is necessary to find the true weight of the fibre. If the tare is not calculated accurately, the buyer pays the price of the yarn for the weight of the cardboard packaging.
Settlement Accuracy
Final payments are only released once the audit of the inbound weight matches the invoiced amount within a small agreed tolerance. This ensures that the mill only pays for the material they can actually use in production.
