Table 1.
Participating laboratories.
| Name of participant |
|---|
| China National Tobacco Corp., Beijing Cigarette Factory Borgwaldt KC GmbH (now Körber) |
| Enthalpy Analytical |
| Japan Tobacco Inc. |
| JT International, Ökolab |
| KT&G Research Institute |
| Labstat International Inc. |
| Philip Morris International Brazil |
| Philip Morris International Indonesia |
| Philip Morris International Switzerland |
| Reemtsma Cigarettenfabriken GmbH - Imperial Brands |
| Souza Cruz SA, BAT |
Table 2.
Study test articles.
| Sample ID | Description | Key design description a | Approximate TPM ISO 3308 b (mg/cig, t.p.) | Approximate TPM ISO 20778 b (mg/cig, t.p.) |
|---|---|---|---|---|
| A | KR 2R5F | American Blend PT: 30% Burley: 23% Tobacco: 540 mg/cig Total ventilation: 69% | 2.4 | 28 |
| B | KR 1R6F | American Blend PT: 10% Burley: 22% Tobacco: 625 mg/cig Total ventilation: 33% | 10 | 39 |
| C | CM9 | Virginia Tobacco PT: 0% Burley: 0% Tobacco: 980 mg/cig Total ventilation: 0% | 17 | 42 |
Table 3.
Smoking regimes and key parameters.
| Regime | Machine parameters | Vent blocking |
|---|---|---|
| ‘Non-Intense’ | ||
| ISO 3308 | Puff volume: 35 mL Puff frequency: 1/60 s Puff duration: 2 s | None |
| ‘Intense’ | ||
| ISO 20778 | Puff volume: 55 mL Puff frequency: 1/30 s Puff duration: 2 s | 100% |
Table 4.
Estimated r and R Limits. Weighted to represent 20 cigarettes for non-intense smoking and 10 cigarettes for intense smoking for one replicate.
| Sample | Mean | N data sets a | r | r (%) | R | R (%) |
|---|---|---|---|---|---|---|
| NO Non-Intense (μg/cig) | ||||||
| A | 64 | 13 | 5.3 | 8.2 | 17.4 | 27.2 |
| B | 153 | 13 | 9.7 | 6.3 | 23.0 | 15.1 |
| C | 64 | 13 | 3.8 | 5.9 | 16.6 | 25.9 |
| NO Intense (μg/cig) | ||||||
| A | 323 | 13 | 28.3 | 8.8 | 66.9 | 20.7 |
| B | 369 | 13 | 26.4 | 7.1 | 80.9 | 21.9 |
| C | 131 | 12 | 9.7 | 7.4 | 65.0 | 49.7 |
| NOx Non-Intense (μg/cig) | ||||||
| A | 71 | 13 | 6.0 | 8.6 | 26.3 | 37.3 |
| B | 177 | 13 | 11.8 | 6.7 | 34.8 | 19.7 |
| C | 77 | 13 | 4.9 | 6.3 | 19.4 | 25.3 |
| NOx Intense (μg/cig) | ||||||
| A | 386 | 13 | 34.0 | 8.8 | 83.4 | 21.6 |
| B | 437 | 13 | 30.4 | 7.0 | 88.5 | 20.2 |
| C | 154 | 12 | 12.1 | 7.9 | 72.1 | 46.9 |
Figure 1.
Z-Scores for NO for each lab under ISO non-intense and ISO intense smoking regimes. Where NI = non-intense regime and I = Intense regime; samples are denoted as A (KR 2R5F), B (KR 1R6F), and C (CM9). Lab code gaps reflect withdrawals following code assignment and prior to result submission.
Figure 2.
Z-Scores for NOx for each lab under ISO non-intense and ISO intense smoking regimes. Where NI = non-intense regime and I = Intense regime; samples are denoted as A (KR 2R5F), B (KR 1R6F), and C (CM9). Lab code gaps reflect withdrawals following code assignment and prior to result submission.