This section specifies a method for checking that the thickness of a dried film of paint on a test panel lies within the limits specified for the relevant test. It is not intended to give a precise measurement of the actual thickness of the film.
The measurement is obtained by reference to a graph showing the relationship between film thickness and film mass of the material under test.
1.1.2 This method is intended for use with air-drying paints in early stages of hardening which are too soft to permit thickness measurements by instrumental methods.
1.1.3 The method gives an overall mean value for the thickness of the paint film based on its dry mass and does not involve any mechanical damage to the paint film.
SS 5 Pt.B1-1985 history
1985SS 5 Pt.B1-1985 Methods Of Test For Paints, Varnishes And Related Materials Part B1 : Determination Of Film Thickness