Ray box, simple, safe and sturdy source of projected light for many classic optics experiments, produces parallel convergent rays across a plane horizontal surface and the rays are intense enough to be traced in natural light. Built in solid aluminum extrusion casing, 100-240V 50/60 Hz
Rat, 1X Injected Vacuum Pack 10, preserved in Ward s One Solution, A safer alternative to standard formalin fixed specimens, From individual organs to whole organisms, unsurpassed tissue preservation with a safer experience for students