10-Pack Stoddard Test Tube Clamp with Finger Grips, Stainless Steel, 6 inch Lab Equipment and Supplies_Lab Equipment Beech wood test tube rack

Beech wood test tube rack holds 12 tubes up to 20mm diameter in a 9-inch frame for organized storage during chemistry and biology experiments

Twelve-ball drilled set in a foam-lined plastic case with two each of aluminum

Cutaway hand-powered Wankel rotary model at 8 by 7 by 3

this Van de Graaff generator delivers spark-producing high-voltage demonstrations in the physics classroom

5 mm in diameter

10-Pack Stoddard Test Tube Clamp with Finger Grips, Stainless Steel, 6 inch Lab Equipment and Supplies_Lab Equipment Beech wood test tube rackPack of 10 Stoddard test tube clamps in stainless steel with finger grip securely holds test tubes during heating, mixing, and laboratory procedures.