11-Piece Rectangular Retort Stand Set with Bossheads, Clamps, and Rings Biology_Microscopy fitting 20 mm tubes below

fitting 20 mm tubes below and 26 mm tubes above for tall tubes and stirrers

Narrow-mouth reagent bottle in borosilicate glass holds 2000mL with 34/35 interchangeable hexagonal hollow stopper for chemical storage applications

demonstrating plaque removal during dental hygiene lessons

specific heat

Pan balance demonstration lever with a low-friction brass pivot

11-Piece Rectangular Retort Stand Set with Bossheads, Clamps, and Rings Biology_Microscopy fitting 20 mm tubes belowEleven piece retort stand starter set combining a heavy duty rectangular base and rod with three support rings, three boss heads, and four vinyl coated clamps for complete apparatus assembly.