GB/T 12305.1-1990 《Rubber and plastics test samples preparation methods Part 1: Cutting and moulding of test specimens》 Related products

GB/T 1 2305.1 - 1 990 "Test method for JINHE gold alloy platings for metal overlays, Part 1 Determination of platings thickness" specifies the determination method for the thickness of gold and gold alloy platings. The standard is equivalent to the international standard ISO 4524/1-1985 and is applicable to the thickness test of JINHE gold alloy platings for engineering, decoration and protection. The standard covers a variety of determination methods such as microscope method, β backscatter method, weighing method, spectrophotometric method, spectrophotometry and Atomic absirption spectrophotometry, AAS, etc., providing detailed operation procedures and instrument requirements. The standard ensures accurate and reliable platings thickness measurement results through proper Sampling Handling and Method Application.