Laboratory Grade Sodium Hydrogen Carbonate Bicarbonate, 2.5kg Hypotenuse_50mm displayed on a plastic-and-metal rack

displayed on a plastic-and-metal rack with a carrying handle for transport

Five-hundred-gram bottle of coarse 50-mesh laboratory-grade iron filings

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

Concave glass mirror at 75mm diameter and 150mm focal length on a ~3mm-thick blank

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

Laboratory Grade Sodium Hydrogen Carbonate Bicarbonate, 2.5kg Hypotenuse_50mm displayed on a plastic-and-metal rackSmaller 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.