Fabric Scouring
Starch removal protocols govern the preparatory treatment stage for woven linen goods before dyeing or finishing mills receive the material for final coloration. ISO 10321 Desizing Standard specifies the method for determining the percentage of sizing agents present on flax and linen fabrics after a removal procedure has taken place. Technical departments within Chinese manufacturing plants rely on this specification to calculate extraction efficiency by comparing residual sizing mass against dry specimen weight.
Enzyme Efficiency
Laboratory technicians execute gravimetric analysis by extracting water-soluble starch coatings from conditioned swatches using standardized chemical reagents or enzymatic baths. Starch retention values determine whether enzymatic or acidic hydrolysis baths achieved adequate breakdown of the protective polymers applied to warp yarns during the weaving process. Mill supervisors compare these laboratory percentages against buyer acceptance thresholds established in supply contracts before releasing the greige cloth to wet processing lines.
Export Verification
Commercial agreements dictate whether a specific textile lot meets the stringent limits demanded by international apparel brands or remains restricted to domestic utility markets. External inspection agencies audit production records and test reports generated under this procedure to certify compliance prior to issuing bills of lading for foreign shipment. Final quality clearance depends entirely upon verifiable laboratory data confirming that residual sizing agents fall below the maximum allowable percentage agreed upon by the contracting parties.