Mass Adjustment
Textile calculation standards establish fixed percentage additions to oven-dry fiber mass to determine commercial invoice weight for trade transactions. Raw flax and yarn trading relies on commercial moisture regain allowance to convert dry mass measurements into standardized commercial weight. The standard governs mass adjustments in commercial contracts across wet-spun and dry-spun yarn lots.
Application stops when testing follows non-standard conditioning parameters without contractual agreement.
Standard Value
Laboratory testing determines the oven-dry mass fraction of a linen shipment before applying agreed moisture correction factors. Under international trade customs for Chinese flax spinners, commercial moisture regain allowance sets twelve percent for raw scutched flax and twelve point zero percent for linen yarns. A calculation adjusts the invoice mass by multiplying the dry mass by one plus the designated regain fraction.
When scutched line flax arrives at a mill with fifteen percent actual moisture content, testing determines true dry weight and recalculates payable mass according to the standard allowance. This calculation prevents buyers from paying for excess water weight accumulated during transport or storage in humid coastal warehouses. Mill accountants record the resulting commercial weight on certificates of inspection prior to letter of credit settlement.
Settlement Limit
Standard regain figures do not represent natural ambient moisture absorption levels inside spinning rooms. Using commercial moisture regain allowance normalizes financial settlements without requiring climate control during international ocean freight transport. Deviations in testing temperature invalidate calculated invoice weights.
