Zhilitong Electromechanical Co.,Ltd

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How to determine UL94 classed V-2 testing


As per UL94 standard, a material shall be classified V-2 as described as below:


  1. Afterflame time for each Individual specimen t1or t2 : ≤30s
  2. Total afterflame time for any condition set ( t1 plus t2 for the 5 specimens): ≤250s
  3. Afterflame plus afterglow time for each Individual specimen after the second flame application (t2+t3): ≤60s
  4. Afterflame or afterglow of any specimen up to the holding clamp: No
  5. Cotton Indicator Ignited by flaming particles or drops : Yes

 Zhilitong Electromechanical Co., Ltd produces UL94 Burning Tester, which can perform UL94 classed V-1 testing.

UL94 Flammability Test Apparatus ZLT