| Description | UL 1581, § 1060 (FV-1 / Vertical Flame and FT1 Test) |
|---|---|
| Length of specimen | 457 - 610 mm |
| Burner | Bunsen burner with additional air supply (Tirril gas burner) Ø 9,5 mm |
| Test temperature | 500 W flame |
| Position of specimen | vertical |
| Position of flame | 20° to vertical specimen |
| Duation of flaming | 5 x 15 seconds with 15 seconds flaming break |
| Conditions | Paper max. 25% carbonized. The specimen may keep on burning for max. 1 minute after the last application. Material dropping must not ignite the cotton (B) lying under the specimen. |
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