T-Tube with stopcock and graduated jar, without flowerpot.

For determining the pressure exerted by the sap flowing from a stem stump. Manometer graduated 0 to 200 x 1 mm, for attachment by means of rubber tube or tape to the cut stem of a plant growing vigorously in wet soil.

Pfeiffer’s, complete, as illustrated.

Apparatus for Investigating Pressure Effects Due to Osmotic Pressure

On base, with jar for seeds, pointer and scale.

On base, with jar for seeds, pointer and scale.

For investigating transpiration. Measures the uptake of water by a cut plant shoot. The cut shoot may be replaced by a porous pot filled with water which enables measurement of the rate of evaporation from a moist surface, thus giving indication of relative humidity. Comprises a capillary tube wi...

A reservoir with 3 hole stopper for holding a graduated capillary tube 390 mm long, a short length of 10 mm dia glass tube to hold plant shoot and a funnel of 25 ml with a stopcock.