W-000.09.020 [2005-08] Water – Dry Residue in Filtrate

Application/Purpose

The method describes how to determine the amount of dry residue in water filtrate. The dry residue comprises the solids dissolved in water, excluding any volatile compounds.

Scope of Application

Water intended for use as an ingredient in the production of beer (brewing liquor) or other foods

Principle

For determination of the dry residue in water after filtration, a certain quantity of filtrate is evaporated until dry. It is subsequently dried in a drying oven to eliminate any remaining moisture.

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