The whole apparatus may be of cast iron ... like grinding any substance With a pestle i :, a mortar. The pestle is iron, and the mortc - wood, but this snuff is first ground coarse ur f der ...

Samples of pharmaceutical formulations containing 40 mg of PROP per tablet were acquired from local drugstores. 20 tablets of each sample were ground with a mortar and pestle, and a portion of ...

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