Rectangular Refraction Acrylic Block, 75 x 50 x 18mm Health & Genetics_Equipment & Supplies 200mm aluminum pump plate with

200mm aluminum pump plate with a stopcock and integrated pump connector on a heavy tripod base

ground polished edges and optically worked surfaces giving long-bench divergence flexibility in refraction work

restoring UV-C output in the compatible goggle sanitizer cabinet once the original lamp reaches end of service life

Heavy-duty 500-piece teacher molecular model set with 230 atoms and 270 bonds

exposing the full urinary tract for combined anatomy and physiology teaching at 15 by 9 inches

Rectangular Refraction Acrylic Block, 75 x 50 x 18mm Health & Genetics_Equipment & Supplies 200mm aluminum pump plate withPairs 75 by 50mm with 18mm thickness on an acrylic rectangular refraction block, the lightweight beveled body giving safer per desk Snell's law and lateral displacement demos.