Forensic Significance of Fluorescent Brighteners: Their ...
Apr 01, 1977·Washing powders should be extracted in the cold, under a safe light, with a mixture of acetone and 5M ammonia aq. (45 + 5) (Schulze et al., 1974). When the proportion of powder to solvent is 50mg ml""1 only a single (50nl) application of the extract to the chromatogram is necessary.