General requirements.

16 C.F.R. § 1615.3
in effectEffective: 2024-07-01
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(a) Summary of test method. Five conditioned specimens, 8.9 × 25.4 cm. (3.5 × 10 in.), are suspended one at a time vertically in holders in a prescribed cabinet and subjected to a standard flame along their bottom edge for a specified time under controlled conditions. The char length is measured. (b) Test criteria. The test criteria when the testing is done in accordance with § 1615.4 Test procedure are: (1) Average char length. The average char length of five specimens shall not exceed 17.8 cm. (7.0 in.). (2) Full specimen burn. No individual specimen shall have a char length of 25.4 cm. (10 in.).

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