ISO/IEC 17025:2005 General requirements for the competence of testing and calibration laboratories
BS ISO 13276:2017 history
2020BS ISO 13276:2020 Tobacco and tobacco products. Determination of nicotine purity. Gravimetric method using tungstosilicic acid
2017BS ISO 13276:2017 Tobacco and tobacco products. Determination of nicotine purity. Gravimetric method using tungstosilicic acid
1997BS 5202-17:1997 Methods for chemical analysis of tobacco and tobacco products - Determination of nicotine purity (gravimetric method using tungstosilicic acid)
BS ISO 13276:2017 Tobacco and tobacco products. Determination of nicotine purity. Gravimetric method using tungstosilicic acid has been changed from BS 5202-17:1997 Methods for chemical analysis of tobacco and tobacco products - Determination of nicotine purity (gravimetric method using tungstosilicic acid).