Laboratory Grade Ammonium Chloride, 500g Type_Geographical sized as a classroom aquarium

sized as a classroom aquarium

Velcro bumpers

Illustrates liquid-density changes with temperature using a weighted 75mm hollow copper sphere that floats in 15°C water and sinks as the water warms to 30°C

sized so that students can compare its uniform-curvature surface charge against sphere and cone partners in the conductor set

Charged porous pot with a zinc rod inside a rectangular polythene jar

Laboratory Grade Ammonium Chloride, 500g Type_Geographical sized as a classroom aquariumUsed to lyse red blood cells and isolate proteins in biology workflows, this 500g bottle of laboratory grade ammonium chloride doubles as a buffer component in qualitative chemistry analysis.