Grinders are available with glass or fluoropolymer resin pestles

Grinding chamber is made of low extractable borosilicate glass. The conical tip of the grinding chamber allows initial reduction, followed by passage through the cylindrical section for the final homogenization step. When pestle is “bottomed” within the grinding chamber, the clearance is a uniform 0.102–0.152mm (0.004–0.006").

Glass pestles are ideal for the homogenization of heart, muscle, lung, skin, and plant tissue. Fluoropolymer resin pestles are ideal for use with soft tissues such as brain and feature a stainless steel shaft with a 6.3mm (¹/₄") diameter.