Services | Greasy & Scoured Wool
Wool Base & Vegetable Matter Base
Yield (IWTO 19)
Wool Base is the percentage of a sample which is oven dry wool fibre without any impurities i.e. free from ash, ethanol extractives and all vegetable matter.
Vegetable Matter Base is the percentage of a sample which is made up of burrs, hard heads, twigs, seeds, leaves and grasses free from ash and ethanol extractives.
The Wool Base and Vegetable Matter Base results are used to calculate the amount of clean wool fibre that is expected to be produced when a lot of raw wool is processed i.e. the Yield of a lot.
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