SUMMARY: A tissue grinder is described, consisting of a nylon pestle mounted on a stainless steel shaft and revolving within a Pyrex tube; a screw is cut in the pestle to increase its efficiency. The whole device is sealed with a Subaseal bung and may be sterilized by autoclaving. Optimum grinding with minimum heating is produced by rotating the pestle at 500 r.p.m. with a small electric motor.


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