Plastic Slant Test Tube Rack for 36 x 25mm Tubes Activity Kits_Blood Typing sized so the leaf deflection

sized so the leaf deflection stays visible from the back of the room during whole-class electrostatics demos

Designed to clamp loose components into the modular demonstration system

and a three-pronged dual-adjusting clamp

3V 2A AC filament line for cathode-ray experiments

0V DC max for through-hole circuit work and indicator-light applications in introductory electronics units

Plastic Slant Test Tube Rack for 36 x 25mm Tubes Activity Kits_Blood Typing sized so the leaf deflectionAutoclavable plastic test tube slant rack holding 36 tubes up to 25 mm in diameter at a 5 or 20 degree angle, supporting microbiology slant culture preparation.