This standard specifies the method for the determination of impurities contained in natural raw rubber. It is not suitable for the case where the surface is contaminated by impurities.
GB/T 8086-1987 history
2019GB/T 8086-2019 Rubber, raw natural—Determination of dirt content
2008GB/T 8086-2008 Raw natural rubber.Determination of dirt
1987GB/T 8086-1987 Raw natural rubber--Determination of dirt