Straight Cone to Flexible Tubing Rotaflow Stopcock Adapter, 29/32 Cone, Borosilicate Glass Base Shape_Rectangular 230mm disc graduated 0-360 degrees

230mm disc graduated 0-360 degrees in 1-degree steps locks in any position alongside a rotatable lamp house and six magnetic acrylic elements for full ray-tracing studies of reflection and refraction

The item measures 21" in height when positioned upright and is designed with a PTFE key stopcock that allows optimal control of flow when working with liquids in the lab

spectral-line

Hexagonal hollow stopper in borosilicate glass features 19/26 cone with flat end for sealing ground joint vessels and chemistry apparatus

an Erlenmeyer flask

Straight Cone to Flexible Tubing Rotaflow Stopcock Adapter, 29/32 Cone, Borosilicate Glass Base Shape_Rectangular 230mm disc graduated 0-360 degreesStraight cone to flexible tubing Rotaflow stopcock in borosilicate glass provides controlled flow between ground joint apparatus and rubber tubing.