2PK Test Tube Peg Drying Rack - Holds 96 x 13mm Tubes - Plastic Category_Science Kits dimensioned as the matched replacement

dimensioned as the matched replacement for PH0767A and PH0768 ripple tanks for focusing-and-reflection demos

Clip-together wooden test tube stand with two 30-mm and four 20-mm holes

sized for the student electrolyzer to study electroplating

Two-inch friction cube with four distinct faces — wood

Determines heat exchange during reactions and phase changes via a 100 by 75mm polished aluminum vessel with wood-and-plastic lid

2PK Test Tube Peg Drying Rack - Holds 96 x 13mm Tubes - Plastic Category_Science Kits dimensioned as the matched replacementPeg style plastic drying rack that holds inverted test tubes for air drying after cleaning, with sturdy construction for repeated classroom and lab use.