Battery Eliminator, 1A, Alternate Model Material_Polyethylene Pack of 50 solid rubber

Pack of 50 solid rubber stoppers in assorted sizes provides acid and alkali resistance for comprehensive laboratory vessel sealing applications

5 inch specific gravity cylinder with a top hook for spring-scale massing

5 inches tall

sized so that students can compare its uniform-curvature surface charge against sphere and cone partners in the conductor set

and a refractive-fluid vessel form the core of this 28-piece geometric optics workstation

Battery Eliminator, 1A, Alternate Model Material_Polyethylene Pack of 50 solid rubberUsed to replace dry cell stacks at the bench, this 1A battery eliminator handles AC and DC simultaneously to power circuit experiments without rotating in fresh disposable batteries.