Mass Calculation
Quantitative mass recovery calculations establish the net usable textile fibre obtained from raw coat harvests. Determining camel hair yield requires measuring clean dry down weight against the original raw fleece weight delivered to the processing facility. Dehaired down yield accounts for the removal of coarse guard hair alongside dirt and natural secretions.
The calculation applies exclusively to raw fleece processing and does not govern yarn spinning efficiencies or garment cutting waste.
Dehairing Efficiency
Mechanical separation divides outer guard hair from soft undercoat down based on coarse diameter differences. Heavy guard hair with diameters exceeding forty micrometres lacks thermal softness and must be separated from fine down averaging eighteen micrometres. Down recovery percentages dictate raw material valuation, as residual coarse hair degrades fabric hand.
Impurity Removal
Raw coats contain high concentrations of windblown sand and soil particles embedded during animal grazing in arid environments. Industrial washing opens the coarse fleece to release trapped mineral matter through agitation and aqueous bath rinsing. Detergent formulations remove suint and fatty residues without felting delicate down fibres.
Scouring losses combine with guard hair waste to reduce the initial raw lot weight down to the clean commercial yield figure, shifting net financial return.
Commercial Settlement
Invoices rely on certified clean yield percentages to adjust raw contract prices. Payment adjustments reflect actual clean fibre delivered rather than gross raw weight.