Glass Water Still Material_Polyethylene Nickel-plated T-pins provide secure specimen

Nickel-plated T-pins provide secure specimen pinning with broad heads for stable dissection board mounting in biology laboratories

levitating above one another when oriented with like poles facing

a 75mm-aperture double-concave glass lens at 100mm focal length spreads light through optically worked surfaces and ground polished edges

and cylinders during glassware care

Graduated white screen mounted for use on the optical bench

Glass Water Still Material_Polyethylene Nickel-plated T-pins provide secure specimenAll glass water still producing distilled water for laboratory use through a contamination free path that eliminates metallic leaching from internal surfaces.