Laboratory Grade Sodium Hydrogen Carbonate Bicarbonate, 2.5kg Hypotenuse_50mm demonstrating potential-to-kinetic energy conversion through

demonstrating potential-to-kinetic energy conversion through cord-suspended winding and unwinding

Front glass window slides up to allow insertion of ionizing material in chamber

4 inches with thread-fitted adjustment

Reagent-grade potassium hydroxide pellets

Engineered with a higher spring constant than a classic coiled novelty spring

Laboratory Grade Sodium Hydrogen Carbonate Bicarbonate, 2.5kg Hypotenuse_50mm demonstrating potential-to-kinetic energy conversion throughSmaller 2. 5kg pack of laboratory grade sodium hydrogen carbonate (NaHCO3), the standard buffering and acid neutralization agent for general chemistry and biology laboratory student work.