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Methods of test for paints. Tests on liquid paints (excluding chemical tests) -- Determination of natural spreading rate by brush application
1.1 This International Standard describes a method for assessing the natural spreading rate of application of a product (in terms of area per wet film mass or area per wet film volume, as appropriate) when applied by brush to test panels.
1.2 The method is not suitable for products that contain highly volatile solvents.
NOTE The results are dependent on the type and nature of the substrate. Although consistent results may be obtained by one operator, care should be taken if results between operators and between laboratories are to be compared.
In such circumstances, the use of a common reference product is recommended.
Determination of spreading rate (in terms of area per wet film mass or volume) by brush application to test panels.
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