Plano-Convex Glass Lens, 25mm Diameter, 50mm Focal Length Chemical_Phosphate Buffer Four-hole purple atoms in a

Four-hole purple atoms in a 10-pack at 2

the heaviest-leaded flint giving the strongest dispersion in the comparison kit

Four-piece Euro-design polypropylene measuring jug set covering the four mid-range bench volumes

offering a larger bore than narrower models for higher-volume bench-to-bench fluid runs

Friction-fit lid on this half-gallon steel tin

Plano-Convex Glass Lens, 25mm Diameter, 50mm Focal Length Chemical_Phosphate Buffer Four-hole purple atoms in aGlass plano convex lens at 25mm diameter and 50mm focal length, the f 2 geometry concentrating light to a sharp focus for refraction, image formation, and beam collimation demos.