"The Mystery of Lyle and Louise"

Help kids forget their pain with these fun designs.

For your Electrostatic Needs!

Various sizes. Packages of 12.

Weight Sets with hooks on both ends, available in brass or steel.

Use as a starter kit or a refill.

Educational Materials, Application: Physics, 1½" dia., with ¼" hole (½" wide)

Red steel Retort Bases with two tapped holes support ring stand, titration, or specific gravity setups.

By choosing an ELGA water purification system, you are making an investment in quality, reliability and value.

The CENTRA has revolutionised the way that large volumes of pure water are produced, stored and distributed

The O₂ gas sensor measures oxygen concentration in air, and is temperature compensated for use in different environments. It has a wide measurement range, allowing it to be used to study human and cellular respiration. The O₂ gas sensor also includes a 250 ml bottle that can be used to study the rusting of iron, or as a respiration chamber for monitoring plants and insects.

Economical noncontact thermometer fits right in your pocket!

Bandages come with the preferred and patented Stat Strip® easy opening wrapper that nurses request.

This hole punch has adjustable hole positions with accuracy and durability.

Premium line of glass lenses designed specifically for Universities.

Harvard Trip balances are two-pan balances designed for comparative weighing.

Stainless steel hooked weights set with a capacity of 1000 g. Ideal for classroom or lab experiments.