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This International Standard describes test methods for evaluating the sag resistance (resistance to sagging) ofpaints, varnishes and similar coating materials (coatings) when applied to a substrate and held in a verticalposition. Evaluation of the sag resistance can be carried out after the coating has been applied as follows: a) using a sag index applicator on a horizontally placed test panel which is afterwards put into a verticalposition, or b) using a spray gun for application on a substrate in a vertical position. NOTE Brush or roller application can also be used provided that an even coating is applied. This International Standard is applicable to liquid coatings only.