Recommended Methods obsolete No. 18 - Materials Used as Cigarette Tipping Papers Having a Perforated Zone - Determination of Unit Air-flow and Permeability January 1991
Recommended Methods No. 7 - Determination of Nicotine in the Mainstream Smoke of Cigarettes by Gas Chromatographic Analysis (CRM developed into ISO 10315; ISO 22253) Aug. 1991 - second edition
Recommended Methods No. 8 - Determination of Water in the Mainstream Smoke of Cigarettes by Gas Chromatographic Analysis (CRM developed into ISO 10362-1) Aug. 1991 - second edition
Reports Determination of Repeatability and Reproducibility for the Measurement of Nicotine-free Dry Particulate Matter, Nicotine, Water, using CRMs 7, 8, 21, 22, 23 and 25 CORESTA Report 1991-1 Aug. 1991 - amended June 2007
Recommended Methods No. 21 - Atmosphere for Conditioning and Testing Tobacco and Tobacco Products (CRM developed into ISO 3402) Aug. 1991 - second edition
Recommended Methods No. 22 - Routine Analytical Cigarette-Smoking Machine: Specifications, Definitions and Standard Conditions (CRM developed into ISO 3308) Aug. 1991 - second edition
Recommended Methods No. 23 - Determination of Total and Nicotine-Free Dry Particulate Matter using a Routine Analytical Cigarette - Smoking Machine Determination of Total Particulate Matter and Preparation for Water and Nicotine Measurements (CRM developed into ISO 4387) Aug. 1991 - second edition
Recommended Methods No. 24 - Cigarettes – Sampling (CRM developed into ISO 8243) Aug. 1991 - second edition
Recommended Methods No. 25 - Ambient Air-Flow Around Cigarettes in Routine Analytical Smoking Machines: Control and Monitoring (CRM developed into ISO 3308; ISO 20778) Aug. 1991
Recommended Methods obsolete No. 30 - Determination of Residues of the Suckercide Flumetralin (Prime Plus, CGA-41065) on Tobacco June 1991