Ganong Potometer

For demonstration of transpiration rates and rates of water absorption by 

a cut shoot under various external conditions. Aplant shoot is sealed into 

a stopper which fits the end tube, and the whole apparatus is filled with 

water, the open end of the capillary tube, which is graduated in mm, 

dipping into a beaker of water. The position of the air bubble may easily 

be adjusted by opening the glass stopcok to admit water from the central 

reservoir. The whole apparatus is mounted on varnished wooden base 

by spring clips. Height to top of reservoir 170mm Diameter of reservoir 

20mm, Length overall 320mm