50-Pack Assorted Solid Rubber Stoppers, Acid and Alkali Resistant Material_Cork 125-inch inner diameter with a

125-inch inner diameter with a rod grip up to 5/8 inch for larger flasks on a retort stand

000 volts to demonstrate energy conversion

Right-angle cone to flexible tubing Rotaflow stopcock in borosilicate glass connects ground joint apparatus to rubber tubing with flow control

allowing a sodium or filament lamp to be aimed precisely onto a spectrometer slit or refraction-cell setup

Aluminum-cased 4-inch plotting compass with a glass face

50-Pack Assorted Solid Rubber Stoppers, Acid and Alkali Resistant Material_Cork 125-inch inner diameter with aPack of 50 solid rubber stoppers in assorted sizes provides acid and alkali resistance for comprehensive laboratory vessel sealing applications.