Quick Answer: Potometer Apparatus White Stand is a transpiration apparatus for small plant shoots in which a moving bubble in the capillary tube shows water uptake; the capillary is its only glass part, keeping the risk of breakages low.
Last updated: October 2026
Key Features
Shows transpiration in small plant shoots
Only one glass component, the capillary tube, mounted on a strong backing plate
Bubble in the capillary moves as transpiration occurs
Syringe used to zero the scale
Can also measure humidity when a porous pot is connected
Dimensions: 195 x 150 x 75 mm
Technical Specifications
Specification
Value
Dimensions
195 x 150 x 75 mm
Glass components
Capillary tube only
Mounting
Strong backing plate
Scale zeroing
By syringe
Additional use
Humidity measurement with a porous pot
About This Product
The apparatus is submerged and the specimen placed in the tube, after which students follow the bubble along the capillary to measure transpiration and use the syringe to zero the scale between readings. Having just one glass component makes this Biology Lab Equipment item well suited to hands-on student work with minimal risk of breakages.
Frequently Asked Questions
Q1. How does the Potometer Apparatus White Stand show transpiration? As the plant shoot transpires, the bubble inside the capillary tube moves. A syringe is used to zero the scale before the next reading.
Q2. Which part of the potometer is made of glass? Only the capillary tube is glass, and it is mounted on a strong backing plate, so there is minimal risk of breakages.
Q3. Can the potometer be used for anything other than transpiration? Yes. By connecting a porous pot, the apparatus can also be used to measure humidity.
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