This standard specifies the method for determining the number of impurities and foreign particles on the surface of unfolded polyvinyl chloride resin. Since the particles of the paste resin are too fine, this method is not suitable for the determination of the paste resin.
GB/T 9348-2008 history
2008GB/T 9348-2008 Plastics. Poly(vinyl chloride) resins. Determination of number of impurities and foreign particles
1988GB/T 9348-1988 Determination of number of impurities and foreign particles of polyvinyl chloride resins