10-Pack Stoddard Test Tube Clamp with Finger Grips, Stainless Steel, 6 inch Lab Equipment and Supplies_Lab Equipment this Van de Graaff generator

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

supporting up to three pendulums simultaneously for harmonic-motion work

fanning apart visibly when a charged rod approaches to demonstrate electrostatic repulsion and induction

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

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