Stainless Steel Dissection Tray with Wax Liner Size:13.75"x10" Spherical optically worked glass lens

Spherical optically worked glass lens with ground edges demonstrates how diverging lenses always produce smaller virtual upright images for ray-tracing exercises

Depression-welled styrene blood typing trays supplied as a 100-pack

the lower-percentage gel-electrophoresis matrix that resolves larger DNA fragments — melt in a microwave

sized for advanced simple-machines experiments in physics instruction

and 1g weights for use with balances and scales in teaching mass

Stainless Steel Dissection Tray with Wax Liner Size:13.75"x10" Spherical optically worked glass lensWax liner accepts dissection pins to stabilize specimens during tissue exposure, with a stainless steel tray beneath for washable classroom biology workflows.