Calculating Commercial Mass Allowances in Viscose Wool Blend Invoicing Protocols
Commercial mass calculations adjust physical scale weight to agreed moisture regains, protecting yarn buyers from paying for excess atmospheric water.
Sodium Hypochlorite Method
Solubility Test
Quantitative analysis utilizes alkaline chlorine solutions to dissolve protein fibers from mixtures of synthetic or cellulosic fibers. In a standard laboratory setting, the sodium hypochlorite method targets wool or silk components to reveal the percentage of polyester or cotton in a blend. It provides a rapid and cost effective way to verify label claims.
Procedural Mechanism
Fabric swatches are immersed in the reagent and stirred for a set period until the animal fibers vanish completely. When using the sodium hypochlorite method, careful control of temperature and concentration is required to avoid eroding the non-protein fibers. The remaining material is then rinsed, dried and weighed to calculate the final blend ratio.
Testing Range
Capability of this technique is limited to blends that do not contain chlorine sensitive synthetic fibers. Because the reagent is highly reactive, the sodium hypochlorite method requires ventilation and careful neutralization of the waste liquid. It serves as a staple tool for quality control in garment factories.
Result Verification
Comparing the initial weight to the dry weight of the residue confirms if the mill met its target specs. Accuracy increases with repeated trials on the same batch. High results confirm the absence of unintended fillers.