ASTM D6900-15 Standard Test Method for Wet Adhesion of Latex Paints to Glossy alkyd Enamel SubstratesMeaning and use 5.1 After being applied to internal or external surfaces, latex paint may experience high humidity, condensation or precipitation. This sometimes results in a loss of adhesion to the substrate to which they have been applied. The method is a quantitative measurement of the adhesion of latex paint to glossy substrate under such conditions. ASTM D6900-15 Standard Test Method for Wet Adhesion of Latex Paints to Glossy alkyd Enamel Substrates Step 1: Scope 1.1 The method includes a method for measuring the adhesion of latex paint to a glossy alkyd resin enamel substrate by scrubbing it under exposure to wet conditions. 1.2 Values expressed in SI units shall be considered standard. The values given in parentheses are for reference only. 1.3 This standard is not intended to address all safety concerns, if any, associated with its use. It is the responsibility of users of this standard to establish appropriate safety and health practices and to determine the applicability of regulatory restrictions prior to use.