Diameter 38 mm, providing a large field of view. Frame is plastic, lenses are glass.

Surprise Your Students with a Unique Display of Energy Concepts

The yo-yo is a very effective method for introducing students to the topics of potential, rotational, and elastic energy. The patented centrifugal clutch in this model spins it faster and longer for easy exhibitions of basic physics principles. The clutch also makes the return to your hand automatic! The yo-yos are 5.9cm in diameter. Choose clear or glow-in-the-dark model. Includes instructions

Wedge shaped collector accurately (1/100") measures up to 6" or 150 mm of rain. Made of heavy weather-resistant clear plastic. With permanently marked English and metric scales. Length, 13". Top opening measures 2" x 2-1/2". With removable chambers, screws and mounting bracket and instructions.

A timely poster to get your students thinking about the beauty and vulnerability of our planet. "Fragile Handle With Care" appears at the bottom in 20 different languages. Full color and measures 22" x 28".

The ScholAR Handbook is designed as a ready reference for the most-asked questions from Chemistry teachers. Handbook topics include:

* How to Read and Understand MSDS's
* Labeling and Storage Chemicals
* Safety in the Laboratory
* Personal Protection
* Chemical Hygiene Plan
* Planning the Laboratory and the Prep Room
* How to Handle Chemicals
* Solutions - How to Make 'Em
* The Top 25 Demonstrations
* Spill Prevention, Response and Control
* Disposal Issues
* How to Prepare for Next Year and lots more.

*No need to store paper files
*Tutorial included
*Easily search and then print MSDS's

A convenient source for over 1300 Materials Safety Data Sheets (MSDS) organized for easy searching and printing. These generic data sheets include all information sections on the MSDS sheets included with Sargent-Welch chemicals. You can easily search the database by chemical name, common name or CAS number and then print the sheet.

CD-ROM also includes a tutorial on MSDS data sections, with explanations for each section.

System Requirements: *WIN: 486/33 or higher processor, Windows 3.1 or higher, 8MB RAM, CD-ROM disk drive
*MAC: 68040 processor or higher, System 7.0 or higher, 4MB RAM CD-ROM disk drive