Sterile Frog Ringer's Solution, 200mL Rod Material_Stainless Steel Classroom-size 29x39-inch pH color chart

Classroom-size 29x39-inch pH color chart on tear-resistant polyart plastic with a roller fitted for hanging and storage

and a rust-inhibiting enamel liner

4-pound bench stand for small clamp and ring assemblies

For Archimedes' principle experiments

Greatly-enlarged ovum model on a 5 x 5 inch base exposes the zona pellucida and corona radiata surrounding the cell

Sterile Frog Ringer's Solution, 200mL Rod Material_Stainless Steel Classroom-size 29x39-inch pH color chartAmphibian specific 200mL of sterile Ringer's frog solution, the isotonic saline composition for amphibian physiology experiments where mammalian Ringer's would mismatch the species' tonicity needs.