Ignition strength of cigarettes: second testing series
Bibliographic record
Abstract
The ignition strength for a total of 54 brands of cigarettes was determined in accordance with the ASTM E2187-02b standard test method. Fifty-two (52) brands of cigarettes sold in Canada and 2 brands of Philip Morris's Merit cigarettes sold in the U.S. were tested. On the 15-layer filter paper assembly, 51 brands of the cigarettes sold in Canada produced 90 to 100% full-length burning. These cigarettes plus those 10 brands of the cigarettes tested previously (which produced 95 to 100% full-length burning) have a relatively high propensity to ignite upholstered furniture if lit and dropped on soft furnishings. These high percentages of full-length burns demonstrate the need to make cigarettes less prone to cause fires.Only 3 brands of the cigarettes tested were found to have a low ignition propensity. The More Menthol cigarettes produced 15% full-length burns on the 15-layer filter paper assembly and 27.5% full-length burns on the 3-layer filter paper assembly. The Merit Ultra Light cigarettes produced 15% full-length burns on the 15-layer filter paper assembly and 45% full-length burns on the 3-layer filter paper assembly. The Merit Ultima cigarettes produced only 5% full-length burns on the 15-layer filter paper assembly.
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How this classification was reachedexpand
Full frame machine prediction
Teacher imitationNot calibrated prevalence, not ground truth. Human validation pending. The Gemma side is a direct model label for every work in the frame, read from the title-only record. The Codex side is a classifier learned from the 10,348 direct Codex labels and calibrated to design-weighted sample rates; fields without enough sample support carry no Codex call. Candidate is the union of the two sides; consensus is their intersection. These outputs are machine_predicted_unvalidated and are not human labels.
Distilled classifier scores by category (both heads)
| Category | Codex | Gemma |
|---|---|---|
| Metaresearch | 0.001 | 0.001 |
| Meta-epidemiology (narrow) | 0.001 | 0.000 |
| Meta-epidemiology (broad) | 0.001 | 0.001 |
| Bibliometrics | 0.001 | 0.001 |
| Science and technology studies | 0.001 | 0.000 |
| Scholarly communication | 0.001 | 0.001 |
| Open science | 0.001 | 0.001 |
| Research integrity | 0.001 | 0.001 |
| Insufficient payload (model declined to judge) | 0.012 | 0.003 |
Machine scores (provisional)
The two teacher heads of the student model, read on this work. A score orders the frame for review; it never asserts a category, and the validation status ships verbatim with every row.
Baseline scores from an immature model (maturity gate not passed, 7 training rounds). Scores rank; they never assert a category.
score_only:v0-immature-baseline · verbatim from the scoring run: score_only means the number may rank works, and no category label ships from itClassification
machine, unvalidatedMachine predicted; a candidate call from one source (direct Gemma or distilled Codex), not a consensus.
How this classification was reached, model by model and score by score, is at the end of the page under "How this classification was reached".