POTOMETER (0039) To measure transpiration, without breakage. Only one glass component (the capillary tube) and is mounted on a strong backing plate. It consists of a capillary tube with millimeter scale connected via a three way tap to a syringe. The cut shoot is connected to the third outlet. It can also be used to measure humidity by connecting a porous pot to the third outlet. Dimensions overall 155 x 165 x 60mm (width x height x length). Capillary tube 120 x 1mm (length x bore). Qty :