Optically Worked Double Convex Glass Lens, 75mm Diameter, 300mm Focal Length, Alternate Model Capacity_125mL Pack of 50 solid rubber

Pack of 50 solid rubber stoppers in assorted sizes provides acid and alkali resistance for comprehensive laboratory vessel sealing applications

the cylindrical concave curvature spreading light along a single axis for line-focus and divergence demos

Spring-loaded vinyl jaws open to 2

Autoclavable polypropylene draining basket measuring 40 by 40 by 11 cm

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

Optically Worked Double Convex Glass Lens, 75mm Diameter, 300mm Focal Length, Alternate Model Capacity_125mL Pack of 50 solid rubberAlternate model 75mm double convex glass lens at 300mm focal length, the optically worked surfaces and ground polished edges parallel to the main line 300mm focal lens for backup stock use.