Results of Collaborative Tests on International Standard:Cigarettes-Determination of Menthol in Smoke Condensates-Gas Chromatographic Method

Collaborative test on the ISO 13110:2012 "Cigarettes-Determination of menthol in smoke condensates-Gas chromatographic method" was conducted in six domestic laboratories. The results showed that:1) Extracting for 20 or 60 minutes had no significant influence on the determining results of menthol;2) The precision of these studies was in the same order of magnitude as those described in ISO 13110:2012,the ratio of repeatability limit (r) to the mean of menthol contents was less than 10% and the ratio of reproducibility limit (R) to the mean of menthol contents ranged from 25% to 45%. The GC method described in ISO 13110:2012 is suitable for domestic menthol cigarettes.