Reaffirmed 2024

1. SCOPE

This standard prescribes test method and identification requirement of dried/ aqueous extract of lac dye and lac dyed textiles. The detection and identification of synthetic lac dye and natural colorant lac dye are conducted using kit method given in Annex A. Confirmatory tests can be carried out through thin layer chromatography (TLC) and high performance liquid chromatography (HPLC) by chromatographic techniques as given in Annex B and C as well as by UV-visible spectroscopic technique as given in Annex D. The method for extraction of natural lac dye from dyed swatches is given in Annex E.

2. REFERENCES

The following standards contain provisions which, through reference in this text, constitute provisions of this standard. At the time of publication, the editions indicated were valid. All standards are subject to revision, and parties to agreements based on this standard are encouraged to investigate the possibility of applying the most recent editions of the standards indicated below.

1070 : 1992 Reagent grade water