Laboratory Grade Sodium Hydrogen Carbonate Bicarbonate, 2.5kg Hypotenuse_50mm Concave glass mirror at 75mm

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

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

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

PTFE-coated hot plate stirrer combining 250 watts of heating up to 320°C with variable-speed magnetic stirring from 100 to 2000 RPM in a single 2-liter benchtop unit

Laboratory Grade Sodium Hydrogen Carbonate Bicarbonate, 2.5kg Hypotenuse_50mm Concave glass mirror at 75mmSmaller 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.