Moisture Analysis
Standardized laboratory procedures determine the absolute weight of agricultural fibres after all extractable moisture is removed by thermal drying. This dry matter calculation allows Chinese spinning mills to evaluate the actual yield of incoming flax shipments. Buying raw fibre by total wet weight exposes the mill to financial losses if the material holds excess water.
The resulting figure establishes the commercial dry weight used in contracting.
Processing Yield
Moisture content directly influences how flax fibers behave during carding and spinning. By performing a dry matter calculation, laboratory technicians can adjust the blending ratios to achieve uniform yarn density. Mill operators use the moisture-free weight to compute the true extraction efficiency of the spinning line.
Accurate dry weight measurements prevent overestimating the efficiency of the preparatory machinery.
Contractual Settlement
Commercial agreements define the permissible moisture regain for flax trade transactions. When the shipment’s moisture exceeds the baseline limit, the dry matter calculation provides the mathematical adjustment needed to discount the excess water from the invoice. This adjustment protects the purchasing mill from paying for water weight disguised as raw fibre.
To execute this, a sample is weighed, baked in a ventilated oven at one hundred and five degrees Celsius until the weight stabilizes, and weighed again to find the water loss. The resulting ratio is applied to the entire consignment weight to calculate the net commercial mass. This standardized method is the primary tool used by procurement departments to settle disputes over delivery weights.