Manufactures and integrates optical components.

Retail outlet for powerful Neodymium Rare Earth Magnets.

Offers a variety of interfaces and sensors (probes) bundled with computer-based activities for chemistry, biology, physics and general science.

Magnets, magnifiers, molecular models, software, tools, tuning forks, and scientific glassware.

Maker of science hardware and software for the classroom, especially CBL products, probes, and TI programmable calculator programs.

Sells educational science supplies. Site has especially useful information on lab safety and lab design.

Produces radiation monitoring systems and analysis instrumentation serving industries engaged in nuclear power, personal dosimeter and decommissioning, and safeguards.

Supplier of measurement technology using the piezoelectric effect to measure pressure, force and acceleration.

Equipment and software for inquiry-based hands-on teaching of integrated math, science, and technology. Also, there are interactive science puzzlers and an online products catalog.

Manufacturer of surface analysis components and systems.

Supplier of measurement systems, electronic instruments and modules, high resolution radiation detectors, and data analysis software for OEM and end-user applications of high resolution nuclear spectroscopy, fast-timing and pulse-height analysis.

Source for inexpensive and hard-to-find science workshop supplies and materials for the lab, classroom, school workshop, university and home experimenter.

Publisher of scientific books, journals, and electronic media. Specializing in medicine, mathematics, statistics, physics, engineering, life sciences, geosciences, and computer science.

Distributor of science products including the Irwin range of power supplies, the VTT Datalogging system, and a laboratory supplies range.

Educational software to model, simulate and explore a wide variety of phenomena.

Provides thin film deposition controllers, high sensitivity helium leak detectors, digital and analog vacuum gauge controllers, valves and fittings, and mass spectrometers and partial pressure controllers for gas analyzers.

Manufacturer of particle technology instrumentation for the evaluation of particle size, surface area, pore size and pore size distribution, material density, bulk density, surface and catalytic activity, and zeta potential.

Provides scanning probe products and services that facilitate advances in nanotechnology and nanoscience.

Sells physics educational apparatus.

Distributor of thousands of grades K-14 scientific, educational items ranging from basic glassware to hands-on curriculum products.

A nationwide (U.S.) supplier of products for schools and educational institutions specializing in science and technology education.