Bend Receiver Adapter with Vacuum Connection, 19/26 Socket and 24/29 Cone, Borosilicate Glass Glass Flasks_Volumetric Flasks -Class B Research-grade oxygen spectrum tube at

Research-grade oxygen spectrum tube at 26cm with a 10cm central capillary

with a captive thumbscrew on one prong for Melde's standing-wave experiment and binding posts accepting 2-6V DC

Tuned to 512Hz (note C)

and classroom projects

using a 5cm sphere with detachable hemispherical cups that lift away to test for residual charge

Bend Receiver Adapter with Vacuum Connection, 19/26 Socket and 24/29 Cone, Borosilicate Glass Glass Flasks_Volumetric Flasks -Class B Research-grade oxygen spectrum tube atBend receiver adapter with vacuum connection in borosilicate glass features 19 26 socket for reduced pressure distillation procedures.