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LIGHT FASTNESS TESTER

 “ASIAN” Digital Light Fastness Tester is used for determining the Colour Fastness of textiles using on artificial light source.

PRINCIPLE:

                A test specimen of the textile together with Blue Wool Standard is exposed under prescribed conditions to the light from an artificial light source. The colour fastness of the specimen is assessed by comparing its performance with that of blue wool fastness standards.

EQUIPMENT:

   The unit consists of a hollow cylinder of metal open at both ends with an internal dia of – 18 ---------- & length of ---------- 18” ----------. A 500 W OSRAM MBTL fading lamp is mounted centrally so that the light distribution is constant around the circumference.

An hour meter with buzzer and an hour totalisar are mounted on the base.

Three specimen holders are installed at equidistance in inner circumference of cylinder along with metal sheet mask to cover half of each test specimen & the standards. As temperature may touch up to 80º C constant cooling arrangement with water flow is provided. A horizontal pump is scope of supply 50 No 8 test tuber for yarn supply with the instrument.

Blue Wool Standard and Grey Scale for assessing change in colour are optional accessories.

RELATED STANDARD:
ISO: 105
BS: 1006