Standard Moisture Regain Determination in Scutched Flax Fibre
Standard moisture regain in scutched flax fibre is set at 12.0% of bone-dry mass using ISO 6741-1 forced-convection oven drying at 105 degrees Celsius.
Trade Allowance Invoicing
Commercial Settlement
Commodity transactions in the textile sector adjust gross billing weights to standardized commercial mass values through regulated moisture regain corrections. Trade allowance invoicing establishes the contractual price calculations based on legally defined commercial moisture regain allowances rather than raw delivered weights. This billing convention stops applying in transactions governed strictly by net bone-dry weight or fixed-unit pricing without moisture adjustment clauses.
Moisture Correction
Calculating invoiced amounts requires testing representative fibre or yarn samples to determine absolute oven-dry mass. Trade allowance invoicing applies the internationally standardized commercial moisture regain percentage, typically twelve percent for flax yarns, to this calculated dry mass. The resulting commercial invoice weight accounts for natural moisture variability during ocean transit, converting raw scale mass into agreed billing units.
Commercial invoices explicitly detail the certified dry weight, the applied allowance percentage, and the resulting invoice total to prevent disputes over weight lost during transport.
Financial Settlement
Flax spinning mills in China purchase raw European scutched flax and export finished linen yarns under standard commercial allowance contracts. Settlement documentation requires laboratory-issued commercial weight certificates confirming that moisture corrections match trade agreements. Without standardized moisture allowance calculations, seasonal atmospheric humidity changes would cause arbitrary financial penalties between buyers and sellers.
Final monetary payment corresponds directly to the standardized allowance invoice rather than physical port-of-entry scale readings.