IS 8543 : Part 13 : Sec 1 : 1977 : Methods of Testing Plastics: Part 13 Test for Specific Products - Sec 1 : Buttons (Thermosetting)

1. Scope

1.1 This standard (Part XIII/Sec 1 ) prescribes the methods of sampling and tests for plastic buttons (thermosetting) made from urea-formaldehyd. melamine-formaldehyde and phenol-formal dehyde (phenolic) moulding materials.