Sloping Pear-Shape Splash Head, 19/26 Flask and 19/26 Condenser Cones, Borosilicate Glass Subcategory_Eye Protection showing liquid-convection currents as heat

showing liquid-convection currents as heat applied at one corner circulates colored dye

Variable slit width on this optical-bench attachment lets students vary the aperture of the source for diffraction

which allows eight hours of continuous operation

the longest focal value in the 50mm convex line giving the gentlest divergence and largest virtual image

Platinum flame-test wire fused into a 5-inch borosilicate glass handle

Sloping Pear-Shape Splash Head, 19/26 Flask and 19/26 Condenser Cones, Borosilicate Glass Subcategory_Eye Protection showing liquid-convection currents as heatSloping pear shape splash head in borosilicate glass fits 19 26 flask with cone sizing for vacuum distillation with splash prevention.