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Scoured Wool

The Comprehensive Scoured Wool Package (CSWP) was first introduced to the wool industry by NZWTA in 1987 and was regarded as a significant step towards full objective description of scoured wool.

Originally, scoured wool testing consisted of a Condition test only so that the moisture content could be established and this was used to calculate the certified commercial mass.

The Comprehensive Scoured Wool Package consists of:

• A condition test (IWTO-33);
• A yield test (IWTO-19, including Ethyl Alcohol- extractable matter percent, Ashpercent and Vegetable Matter Base);
• Mean Fibre Diameter by Airflow (IWTO-28);
• A Colour test (IWTO-56); and
• A Residual Grease test using Dichloromethane as the solvent.

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