Gas Collecting Tubes "PSAW" with two, three way double oblique bore PTFE (Teflon) key stopcock one on each side.

Gas Collecting Tubes "PSAW" with two, three way double oblique bore PTFE (Teflon) key stopcock one on each side. (363 )

Transport Number Determination Apparatus "PSAW" Leob and Nernst, H form with silver electrodes.	Dropping Bottle Soda Glasss With Glass fitted dropper and rubber teat.	Centrifuge Tube Graduated "PSAW" capacity 50 ml.
Burettes Automatic Zero, Mounted on Reservoir with Screw Type Rotaflow Stopcock with PTFE (Teflon) Key, Rubber Bellow	Tubes Digestion "PSAW" Folin-wu, Marked at 35 and 50 ml. O.D. and 200 mm. length	Wasserman Tubes "PSAW" rimless