Real Coal Specimen Set with Cotton Bag, 5-Piece Lab Supplies_Sieves 5V to demonstrate the wet-cell

5V to demonstrate the wet-cell ancestor of the modern dry battery in early electrochemistry units

and contains four simulated blood samples for realistic replication of the blood typing procedure and safe classroom use

supporting 18 mm thermometers upright and protected between laboratory uses

the slim half-disc geometry letting beams enter the curved face along its radius for clean refraction-angle and TIR observations

Real Coal Specimen Set with Cotton Bag, 5-Piece Lab Supplies_Sieves 5V to demonstrate the wet-cellBundled in a cotton drawstring bag with a linked crystal growing activity, this pack of five small lumps of genuine American anthracite coal doubles as novelty and classroom specimen.