Class B Burette with Glass Key Stopcock, 100mL, 0.2mL Graduations, 30.5 inch, Borosilicate Glass Neulog_Accessories 3 glass stirring rods with

3 glass stirring rods with rounded ends

Pairs a 50 by 50mm plano-cylindrical glass lens with +10 diopter optical power

Open-frame demo motor with two opposing coils on a spinning axle and 4mm banana inputs

Frosted glass gas jar cover measures 2

the deeper body extending the visible refraction path for ray-box and Snell's law refraction studies

Class B Burette with Glass Key Stopcock, 100mL, 0.2mL Graduations, 30.5 inch, Borosilicate Glass Neulog_Accessories 3 glass stirring rods withClass B burette in borosilicate 3. 3 glass holds 100mL with 0. 2mL graduations and glass key stopcock for titration and volumetric analysis.