"VWR"

Smooth-running ball-bearing clamp pulley for use with inclined planes, force experiments, or demonstrations of work and machines, this durable, lightweight plastic pulley fastens to surfaces up to 18 mm thick.

Good grade, green, massive; copper ore.

Ward's® highest quality and purest mineral offerings.

This corrosion-proof polypropylene basket is ideal for rinsing glassware — simply slide the lid on, rinse, and invert for easy draining. The basket holds test tubes for storage, sterilization, or incubation. Autoclavable to 121°C. Size: 17 x 17 x 16cm.

Educational Materials, Accessories, Application: Physics, Support base steel for braided nylon pulley cord, tensile strength 15 lbs. test, height: 23 mm, base dimension: 5×7", thread size: ³/₈-16

Massive, chlorite-rich.

Fifteen Orders Accompanied by Identification Key.

Choose from 2 popular sets of Tetras for your fish tank.

Perfect for Introductory Lessons on Metamorphic Rocks.

Diverse collecion of organisms.

Museum mounts are the ideal supplement for classroom dissection.

Taking their name from the bluish pigment that most of these organisms share, each jar contains a broad sample of several types of cyanobacteria.

Museum mounts are the ideal supplement for classroom dissection.

PYREX® borosilicate glass.

Deep blue, massive, with nepheline; key feldspathoid.

Crystals and crystal sections up to 1", Mohs’ hardness of 9.