GB/T 5474-2016塑料酚醛模塑制品游离氨和铵化合物的测定比色法国家标准
英文:Plastics—Phenol formaldehyde mouldings—Determination of free ammonia and ammonium compounds—Colorimetric comparison m...
英文:Plastics—Phenol formaldehyde mouldings—Determination of free ammonia and ammonium compounds—Colorimetric comparison m...