25-Pack Sterile Self-Standing Individually Wrapped Polypropylene Centrifuge Tubes with Flat Cap, 50mL Length_55mm Dual AC/DC low-voltage power supply

Dual AC/DC low-voltage power supply with an independent digital voltmeter

It's base is 8

Glass tube 33 inches long with a cork piston riding on a stable wooden base

Sprung-tip jockey contact slides smoothly along the resistance wire of a Wheatstone bridge or potentiometer to find the null-deflection balance point during student-built bridge experiments

25-Pack Sterile Self-Standing Individually Wrapped Polypropylene Centrifuge Tubes with Flat Cap, 50mL Length_55mm Dual AC/DC low-voltage power supplyIndividually wrapped, self standing 50mL sterile polypropylene centrifuge tubes ship in a 25 pack for rack free workflows requiring peel open package access.