Abstract
Abstract A collaborative study was conducted among 3 laboratories comparing 2 detergent solutions, 2% Igepal CO 630 and the AOAC-approved 2% sodium lauryl sulfate, in the analysis of extraneous materials in chocolate liquor. Each laboratory tested a minimum of 8 samples per detergent solution. No significant differences were found between the numbers of rodent hairs and insect fragments recovered with the 2 detergent solutions and, in addition, igepal produced cleaner filter papers. The 2% Igepal CO 630 detergent solution has been adopted as a substitute for 2% sodium lauryl sulfate in 44.006(b) for chocolate liquor.
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