Commercial Mass Calculation

Fibre Accounting

The laboratory technician determines the dry weight by placing a representative sample of flax in a convection oven at a set temperature until the weight stabilizes. This procedure removes all free water, allowing the moisture-free mass to emerge from the total batch weight. The dry fibre mass then gains an artificial allowance for the standard moisture regain, which represents the fibre state under controlled relative humidity.

Contracts typically specify the regain value because variations in humidity during shipping significantly alter the weight of bales. Documentation accompanying each shipment records both the gross scale weight and the finalized mass after these adjustments apply to the consignment.

Acceptance Standard

Mill operators rely on these adjusted figures to manage inventory and ensure the output of yarn meets the expected yield. The difference between the gross weight and the computed commercial mass demonstrates the amount of water extracted from the fibre lot. Precise control over this adjustment prevents errors during spinning, where excess water interferes with the drafting of fibres and causes uneven tension in the warp.

Every mill maintains a log of incoming shipments that identifies the moisture regain for each batch, ensuring the production schedule aligns with the true amount of raw material available for processing.