Perspex Friction Rod Type_Low Form demonstrating that electrostatic charge concentrates

demonstrating that electrostatic charge concentrates most densely at the tip where surface curvature is highest

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

exposing extraocular muscles alongside internal ocular anatomy for ophthalmology teaching

and three cast iron support rings for ring-stand assemblies

and a selection of wound coils

Perspex Friction Rod Type_Low Form demonstrating that electrostatic charge concentratesLightweight and chemically stable, this Perspex acrylic rod gains a positive charge when rubbed with cloth, completing the triboelectric series alongside ebonite, glass, and nylon.