2lb Hexagonal Cast Iron Mass with Lifting Ring Chemical_Polyvinyl Alcohol Reagent-grade 100g sodium iodide

Reagent-grade 100g sodium iodide

this 500g bottle of laboratory-grade sodium bicarbonate also serves as a CO2 source for endothermic-reaction demos

with the demonstration pre-assembled for benchtop use

Long-format 6 by 1-inch equilateral glass prism

Wall-powered halogen ray box producing convergent parallel rays bright enough to trace in normal classroom light

2lb Hexagonal Cast Iron Mass with Lifting Ring Chemical_Polyvinyl Alcohol Reagent-grade 100g sodium iodideLifting ring topped 2 pound cast iron hexagonal mass labeled with its weight, sized 3 by 3. 2 by 1 inch for physics experiments on weight, mass, and force in classroom laboratory coursework.