Plain End Single Cone Adapter, 12/21, 4.6 inch Shank, Borosilicate Glass Botany_Botany Charts & Models and tubes during distillation and

and tubes during distillation and reflux

and a semi-circular glass block fill this tabletop optics kit

this pack of 10 iron wire gauze squares measures 5 x 5 inches for supporting beakers and flasks above the burner

Wide-bore silicon tubing at 14 by 3 mm

deflecting a pivoting cobalt-steel compass needle inside a rectangular conductor frame to show that current generates a magnetic field

Plain End Single Cone Adapter, 12/21, 4.6 inch Shank, Borosilicate Glass Botany_Botany Charts & Models and tubes during distillation andPlain end single cone adapter in heavy duty borosilicate 3. 3 glass features 12 21 cone with 4. 6 inch shaft for chemistry apparatus connections.