This International Standard in one of a series of standards dealing with the sampling and testing of paints, varnishes, printing inks and related products.
It specifies a method for determining the fineness of grind of paints, inks and related products by use of a suitable gauge, graduated in micrometres.
It is applicable to all types of liquid paints and related products. Of the three gauges referred to in 4.1 the 100μm gauge is suitable for general use, but the 50 μm and especially the 25μm gauge will only provide reliable results in the hands of skilled laboratory personnel.Particular caution in necessary in interpreting readings of less than 10μm.
BS 3900-C6:2000 history
2000BS 3900-C6:2000 Methods of test for paints - Tests associated with paint film formation - Determination of fineness of grind