Specification:
The open end of the capillary tube is dipped into a beaker of water.
The position of the air bubble may easily be adjusted by opening the glass stopcock to admit water from the reservoir.
demonstration of transpiration rates and rates of water
absorption by a cut shoot under various external conditions.
A plant shoot is sealed into a stopper which fits the end tube and the whole apparatus is filled with water.
The whole apparatus is mounted on a varnished wooden base by spring clips.
Base: 20 x 80mm
Capillary Bore: 1mm.
