"The Mystery of Lyle and Louise"

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.

Fabric adhesive strips are designed to provide comfortable wound protection.

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

Ultra-thin, comfortable, and breathable.

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

Use as a starter kit or a refill.

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

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

Help kids forget their pain with these fun designs.

For your Electrostatic Needs!

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

Economical noncontact thermometer fits right in your pocket!

When minerals, rocks, and fossils cannot be accurately identified by macroscopic observation and testing, thin section slides can reveal the composition and structure of the specimens on a microscopic level.

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

Premium line of glass lenses designed specifically for Universities.

Use as a starter kit or a refill.