Raw Obsidian Igneous Rock Hand Sample, Approx 3 inch Diameter_150mm and simulated anti-A serum and

and simulated anti-A serum and anti-B serum for identifying blood type

EXPLORE IONIC REACTIONS || Designed to introduce learners to the concept of ionic reactions and understand how to write balanced chemical equations while exploring a variety of chemical reactions

providing the saturated-feedstock option for fermentation-rate kinetics and Benedict's-test response-curve work

and analytical chemistry workflows

Raw Obsidian Igneous Rock Hand Sample, Approx 3 inch Diameter_150mm and simulated anti-A serum andObsidian hand sample measures 3 inches with glassy texture, conchoidal fracture, and sharp edges for volcanic glass and igneous rock teaching.