Recommended Methods No. 5 - Determination of Carbon Monoxide in the Mainstream Smoke of Cigarettes by Non-Dispersive Infrared Analysis (CRM developed into ISO 8454; ISO 22947) Sept. 1993 - second edition
Recommended Methods No. 33 - Determination of Acetate in Cigarette Paper (CRM developed into ISO 20370) Jan. 1993
Recommended Methods No. 34 - Determination of Citrate in Cigarette Paper (CRM developed into ISO 20369) Jan. 1993