A-Frame Retort Base and 19.8" Rod Set, 7 x 7", 12mm Diameter Lab Supplies_Classroom Six-lens optics set of three

Six-lens optics set of three double-convex and three double-concave glass lenses with ground beveled edges

large and small helical springs

Larger-bore standard-taper joint pairs with an angled bend to route condensate downstream into the receiving flask during preparative organic chemistry

supporting both rheostat and potentiometer wiring at high current

each with an individual brightness dial for additive color mixing experiments on a 10 by 16 inch base

A-Frame Retort Base and 19.8" Rod Set, 7 x 7", 12mm Diameter Lab Supplies_Classroom Six-lens optics set of threeCorrosion resistant steel retort base supports a 12mm rod for mounting clamps, rings, and ring stands during distillation, filtration, and general lab setups.