This standard specifies the methods for the determination of the appearance and transparency of varnishes, varnishes and thinners. This standard applies to the determination of the appearance and transparency of varnishes, varnishes, paints and thinners, that is, whether they contain mechanical impurities and the degree of turbidity present.
GB/T 1721-2008 Referenced Document
GB/T 3186 Paints, varnishes and raw materials for paints and varnishes. Sampling
GB/T 6682 Water for analytical laboratory use.Specification and test methods
GB/T 1721-2008 history
2008GB/T 1721-2008 Determination of appearance and transparency of varnishes,boiled oils and thinners
1979GB/T 1721-1979 Methods of test for appearance and transparency of varnishes,boiled oils and thinners