4" Cast Iron Closed Ring Support Type_Celestial a low-cost option for introductory

a low-cost option for introductory mechanical-advantage demonstrations

storing and transporting tubes between workstations and the sterilizer

designed for classroom identification drills and examination preparation

Hand-cranked simple motor model on a 5

Steam-sterilizable polypropylene pipette rack holds 12 pipettes horizontally for bench storage and autoclaving in molecular biology laboratories

4" Cast Iron Closed Ring Support Type_Celestial a low-cost option for introductoryRugged cast iron closed support ring with an integral screw clamp, combining a 4 inch inner diameter and a rod grip from 5 16 to 5 8 inch for holding wire gauze and vessels over heat.