U.L. ListingsTo find the most current listings see: http://www.ul.com . This is an important step. Always double check with UL as specifications do change... Most all our foams cary an HBF rating. HF-1 and HF-2 are "fire retardent". The V rating usually applys to injection molded plastics (hard plastic not foam). H designates a "horizontal" test and V is "vertiical".
Criteria Conditions | HF-1 | HF-2 | Afterflame time | 4/5 is £ 2s
1/5 is £ 10s | 4/5 is £ 2s
1/5 is £ 10s | Afterglow time for each individual specimen | £30s | £ 30s | Cotton indicator ignited by flaming particles or drops | No | Yes | Afterflame of afterglow of any specimen up to the holding clamp | < 60mm | < 60mm | Notes: 4/5 - Four out of a set of five specimens
1/5 – One out of a set of five specimens. |
Criteria Conditions | V-0 | V-1 | V-2 | Afterflame time for each specimen t1 or t2 | £ 10s | £ 30s | £30s | Total afterflame time for any condition set (t1 plus t2 for the 5 specimens) | £ 50s | £ 250s | £ 250s | Afterflame plus afterglow time for each individual specimen after the second flame application (t1 + t2) | £ 30s | £ 60s | £ 60s | Afterflame of afterglow of any specimen up to the holding clamp | No | No | No | Cotton indicator ignited by flaming or drops | No | No | Yes |
Afterflame, when the flame ceases.
Afterglow, when the flaming and glowing ceases.
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