BS 5293-15:1991 Sampling and testing carbon black for use in the rubber industry-Method for determination of light transmittance of toluene extract for product evaluation
1991BS 5293-15:1991 Sampling and testing carbon black for use in the rubber industry-Method for determination of light transmittance of toluene extract for product evaluation
0000 BS 5293 Pt.3:1990
1976BS 5293:1976 Методы отбора проб и испытаний технического углерода для использования в резиновой промышленности