1.1 This standard prescribes the method of test for colour retention of vitreous enamel coatings containing cadmium sulphide or cadmium sulpho-selenide type pigments.
Note — The purpose of the test is to detect those red, yellow, orange and some green enamels that are likely to undergo appreciable change in colour upon exposure to atmosphere.
IS 8709-1977 history
1978IS 8709-1977 Test method for color retention of vitreous enamel coatings