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7.2 FOREIGN MATTER

          Vegetable drugs should be free from moulds, insects and another animal contamination. Foreign matter is material consisting of any or all of the following:

          1. Foreign organs: matter coming from the source plant but not defined as the drug.

          2. Foreign elements: matter not coming from the source plant and of either vegetable or mineral origin.

Method

          Weigh 100 to 500 g of the substance being examined or the quantity specified in the monograph and spread it in a thin layer. Separate the foreign matter by hand as completely as possible, weigh it and calculate the percentage present.

APPENDICES • 7.2 FOREIGN MATTER
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หมายเหตุ / Note : THP 2021 Page 924