Recommended Methods No. 39 - Determination of the Purity of Nicotine and Nicotine Salts by Gravimetric Analysis - Tungstosilicic Acid Method (CRM developed into ISO 13276) Nov. 1994
Recommended Methods obsolete No. 40 - Determination of Air Permeability of Materials used as Cigarette Papers, Filter Plug Wrap and Filter Joining Paper including Materials having an Oriented Permeable Zone (CRM developed into ISO 2965) October 1994