ISO 6841:1983 Surface active agents — Technical straight-chain sodium alkylbenzenesulphonates — Determination of mean relative molecular mass — Gas-liquid chromatographic method
1988ISO 6841:1988 Surface active agents; technical straight-chain sodium alkylbenzenesulfonates; determination of mean relative molecular mass by gas-liquid chromatography
1983ISO 6841:1983 Surface active agents — Technical straight-chain sodium alkylbenzenesulphonates — Determination of mean relative molecular mass — Gas-liquid chromatographic method