Potter-Elvehjem All-Glass Tissue Grinders
All-glass construction. Designed for a motor drive using a Stirrer Adapter. Replacement components are available and completely interchangeable. Clearance between pestles and tubes is 0.004" to 0.006". Manufactured from 33 expansion, low extractable borosilicate glass conforming to USP Type I and ASTM E438, Type I, Class A requirements.