Calculating Commercial Mass Regain Adjustments for Dehaired Specialty Animal Fibres
Commercial mass regain adjustments recalculate dehaired specialty fibre billing weight by converting net scale mass to clean dry keratin plus official allowances.
Trade Regain Allowances
Moisture Schedule
Standardised moisture schedules establish the legal commercial weight of textile materials trading across international markets. Schedule guidelines for trade regain allowances specify the exact percentage added to bone-dry fibre mass to determine billable commercial weight. International bodies publish official regain rates for wool, cotton, synthetic, and specialty animal fibres to prevent mass disputes.
These allowances apply strictly to transactional mass determination, stopping short of defining ambient humidity controls for mill processing.
Standard Allowance
Specific percentages reflect the natural moisture absorption capability of distinct polymer structures. Clean scoured wool carries a standard regain allowance of seventeen percent, whereas combed wool top carries nineteen percent. Synthetic fibres like polyester receive low regain allowances due to hydrophobic molecular structures.
Mass Correction
Environmental humidity changes during transit alter physical scale readings without modifying actual fibre content. Commercial buyers calculate invoice mass by taking oven-dry sample mass and adding official regain percentages. This calculation eliminates financial losses caused by weight changes during sea voyages through damp or dry climatic zones.
Certified laboratory test results supersede physical landed weights during contract settlement. Contract parties rely on these standard corrections to maintain commercial equity across global supply chains.
Commercial Invoice
Financial billing uses corrected mass calculations to establish final shipment value. Settlement amounts reflect standardized dry fibre content plus statutory moisture allowances.