Table 1.

Overview of smoking regimens (from ref. 149)

RegimenFTCMassachusettsCanadianISOISO AISO BISO C
Puff volume35 ± 0.5 mL45 ± 0.5 mL55 ± 0.5 mL35 ± 0.3 mL556045
Puff duration2 ± 0.05 s2 ± 0.05 s2 ± 0.05 s2 ± 0.05 s222
Puff frequency60 ± 0.5 s30 ± 0.5 s30 ± 0.5 s60 ± 0.5 s303030
Ventilation holesOpen50% blocked100% blockedOpen50% blocked50% blocked100% blocked
Conditioning atmosphere60% RH ± 2% RH 23.9°C ± 1.1°C min 1, max 14 d60% RH ± 2% RH 23.9°C ± 1.1°C min 1, max 14 d60% RH ± 3% RH 22°C ± 1°C min 2, max 10 d60% RH ± 3% RH 22°C ± 1°C min 2, max 10 d
Smoking environment60% RH ± 3% RH 23.9°C 4 ± 2°C60% RH ± 3% RH 23.9°C ± 2°C60% RH ± 5% RH 22°C ± 2°C60% RH ± 5% RH 22°C ± 2°C
Air flow linear ind. port linear avg. rotary 200 ± 50 mL/min 200 ± 30 mL/min200 ± 50 mL/min 200 ± 30 mL/min
Butt length (whichever is the highest value)Tipping + 3 or 23 mm from buttTipping + 3 or 23 mm from buttTipping + 3 mm or filter + 8 or 23 mm from buttTipping + 3 mm or filter + 8 or 23 mm from butt

NOTE: FTC and Massachusetts protocols have air flow sufficient to exhaust the smoke, about 20 mL/min.

Abbreviation: RH, relative humidity.