13.5" Nylon Bristle Cleaning Brush with Wooden Handle for up to 4" Glassware Material_Wood anchoring retort stands and apparatus

anchoring retort stands and apparatus to the edge of a classroom workbench

Greatly magnified transverse dicot stem model on a mounted base exposes vascular bundle arrangement and primary tissue layers for advanced botany teaching

and 0-50 psi / 0-3

this Van de Graaff generator delivers spark-producing high-voltage demonstrations in the physics classroom

13.5" Nylon Bristle Cleaning Brush with Wooden Handle for up to 4" Glassware Material_Wood anchoring retort stands and apparatusWooden handle supports 13. 5 inches of nylon bristles for scrubbing glassware up to 4 inches in diameter, including beakers, bottles, cups, and jars.