This standard specifies the method for measuring the water absorption of a paint film, that is, the test panel is subjected to a water immersion test under the specified test conditions, and the results are expressed as the mass fraction of the increase in the quality of the paint film after the water immersion test.
HG/T 3344-2012 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 9271 Paints and varnishes.Standard panels for testing