GB/T 3780.20-1997 Carbon black for use in the rubber industry--Determination of light transmittance of toluene extract--Method for product evaluation (English Version)
This standard specifies the determination of light transmittance of carbon black toluene extract for rubber. This standard applies to the identification of carbon black products for rubber.
GB/T 3780.20-1997 history
2016GB/T 3780.15-2016 Carbon black—Part 15: Determination of light transmittance of toluene extract
2006GB/T 3780.15-2006 Carbon black.Part 15:Determination of light transmittance of toluene extract
1997GB/T 3780.20-1997 Carbon black for use in the rubber industry--Determination of light transmittance of toluene extract--Method for product evaluation
GB/T 3780.20-1997 Carbon black for use in the rubber industry--Determination of light transmittance of toluene extract--Method for product evaluation was changed to GB/T 3780.15-2006 Carbon black.Part 15:Determination of light transmittance of toluene extract.