The method consists in pre-drying of a test portion on a boiling water-bath and subsequent evaporation of the remaining water in a drying oven at a temperature of 102+2 鳦.
ISO 6731:1989 history
2010ISO 6731:2010 Milk, cream and evaporated milk - Determination of total solids content (Reference method)
1989ISO 6731:1989 Milk, cream and evaporated milk; determination of total solids content (reference method)