Maximum Circulation - Offset design allows liquid and air to optimally flow around and between all slides & coverslips ensuring best cleaning and faster drying times. Minimalist Design - Tailored to contact a minimal amount of surface area permitting solutions and air to affect entire slide. 12 Slots - Holds 12 large coverslips and microscope slides ranging in width from 22 to 26mm. “STIR IT UP” - Space beneath rack accommodates a small magnetic stir bar. Laboratory Friendly - Utilizes chemically and thermally resistant glass infused polypropylene. Autoclavable! Create A System - Use in conjunction with a 200ml tall form beaker (Cat. No. WSDR-BKER) to efficiently use solutions.