25-Pack Sterile 3-Compartment Triple-Vented Polystyrene Petri Dishes, 90mm Capacity_5000mL 5m of twin flex for

5m of twin flex for connection to mains-grade optical-bench setups

4A standard rheostat with constantan winding on a vitreous-enameled steel tube

Six-lens optics set of three double-convex and three double-concave glass lenses with ground beveled edges

Polystyrene electrolyzer with a transparent cone-shaped cup over a banana-socket base

Water to wine kit demonstrates acid-base indicator chemistry through dramatic color changes that simulate liquid transformation for chemistry demonstrations

25-Pack Sterile 3-Compartment Triple-Vented Polystyrene Petri Dishes, 90mm Capacity_5000mL 5m of twin flex forThree compartment layout on this 25 pack of sterile 90mm petri dishes supports multi condition microbiology comparisons on a single plate.