Standards
Standard |
Swiss SNV 198898 |
Standard officiel: |
|
Principle |
A) Determination of the flammability according to SN 198’898 A specimen of the fabric to be tested is oriented vertically. A flame is applied to it to determine the burning behavior. B) Determination of smoke density following VKFA specimen of the fabric to be tested is placed in a test chamber and completely burnt down. The smoke development is assessed. |
Test method |
A) Determination of the flammability according to SN 198’898 The test specimen is hung in a test cabinet. A flame is applied to the bottom edge of a test sample, during 3s and 15s. The afterflame and afterglow time, damaged length and the rate of flame spread are observed. B) Determination of smoke density following VKFThe test specimen is put in a test cabinet and subjected to a flame till it has been burnt down. The generation of smoke is assessed by means of photometry: the maximum light absorption of the smoke is measured. |
Result |
A) Determination of the flammability according to SN 198’898 The test material passes the test if it shows following characteristics:- Afterflame time maximum 5s- Damaged length maximum 150mm. B) Determination of smoke density following VKF Based on the measured light absorption the material is classified: - ‘qualmgrad 1’: strong smoke generation - ‘qualmgrad 2’: medium smoke generation- ‘qualmgrad 3’: low smoke generation |
Laboratoire |
EMPA Lerchenfeldstr.5 CH-9014 St.Gallen Contact person: Patrizia Ballistreri Tel: +41 712747823 Fax: +41 712747762 E-mail: Patrizia.ballistreri@empa.ch Switzerland |
