Potometer Apparatus (Ganong's)

Product Code : SLE/EBT/22

Potometer Apparatus (Ganong's) (Product Code: SLE/EBT/22) is a Ganong-pattern potometer used to demonstrate transpiration rates and the rate of water absorption by a cut shoot under various external conditions in school and college botany laboratories. Its 1mm capillary bore and glass stopcock reservoir let a teacher reset the air bubble and compare several conditions with the same shoot, which makes it dependable plant biology lab equipment for comparative work. It is made by Jain Scientific Equipments Pvt Ltd (ScienceLab), an OEM manufacturer, at its own factory in Ambala, India.

Specifications

ParameterDetail
TypeGanong's potometer, demonstration apparatus
PurposeDemonstrating transpiration rates and rates of water absorption by a cut shoot under various external conditions
Base20 x 80mm
Capillary bore1mm
Shoot fittingPlant shoot sealed into a stopper that fits the end tube
Bubble adjustmentGlass stopcock admits water from the reservoir to reposition the air bubble
OperationWhole apparatus filled with water; open end of the capillary tube dipped into a beaker of water
MountingVarnished wooden base, apparatus held by spring clips
Product codeSLE/EBT/22
ManufacturerJain Scientific Equipments Pvt Ltd (ScienceLab) — OEM
Country of originIndia (made in Ambala, Haryana)

What Is the Ganong's Potometer Used For?

The Ganong design is usually set up by the teacher at the front bench, where one shoot can be taken through a sequence of conditions in a single lesson – still room air, then moving air from a fan, then a darkened box, or leaves smeared with petroleum jelly on one surface to show where water is lost. Between stages, opening the glass stopcock lets water in from the reservoir and pushes the air bubble back along the capillary, so the class sees a fresh run without the shoot being disturbed. That makes it a practical transpiration experiment for India's school and college syllabuses, where comparing conditions matters more than a single reading.

Because the capillary bore is 1mm, students can go beyond distance-per-minute and estimate the volume of water taken up, using the cross-sectional area of the bore multiplied by the distance the bubble moves. For a good seal, cut the shoot under water, push it into the stopper while still submerged, and check that no bubbles appear at the joint. Keep the open end of the capillary under the water surface in the beaker throughout, otherwise air enters and the run must be restarted.

OEM Manufacturer

Jain Scientific Equipments Private Limited, which trades as ScienceLab, is the OEM (original equipment manufacturer) of this Ganong's potometer. The apparatus is made and assembled at the company's own licensed factory at Saha, Ambala, Haryana, India, rather than bought in from a trader, and it is supplied factory-direct to schools, colleges, university botany departments, dealers and importers in India and international markets.

Because the maker handles enquiries itself, quotations, repeat orders for additional lab sets and questions about replacement glass parts come straight to the manufacturer – just ask us. Read more on the company profile page.

Related Botany Equipment

Other items that fit into the same water-uptake and transpiration demonstration:

Browse the full Botany category for further plant science apparatus and teaching aids.

Frequently Asked Questions

How is the Potometer Apparatus (Ganong's) different from the standard Potometer Apparatus?
The Potometer Apparatus (Ganong's) has a reservoir with a glass stopcock for resetting the air bubble and sits on a varnished wooden base with spring clips, suiting front-bench demonstrations. The standard Potometer Apparatus has only one glass component, the capillary tube, on a strong backing plate for student groups.

What is the capillary bore of the Potometer Apparatus (Ganong's)?
The Potometer Apparatus (Ganong's) has a 1mm capillary bore. Knowing the bore lets students convert the distance the air bubble travels into an approximate volume of water absorbed by the shoot, turning a simple observation into a quantitative transpiration result.

How do I reset the air bubble on a Ganong's potometer?
On the Potometer Apparatus (Ganong's), open the glass stopcock briefly to admit water from the reservoir; the air bubble moves back along the capillary. Close the stopcock again and restart timing, so the same shoot can be tested under the next condition without being disturbed.

Is a beaker supplied with the Potometer Apparatus (Ganong's)?
The Potometer Apparatus (Ganong's) is used with a beaker of water, but a beaker is not listed as part of the apparatus. A suitable Glass Beaker can be added to the same order; contact us to confirm exactly what is included.

Who manufactures the Potometer Apparatus (Ganong's)?
The Potometer Apparatus (Ganong's) is manufactured by Jain Scientific Equipments Pvt Ltd (ScienceLab), the OEM, at its own licensed factory at Saha, Ambala, Haryana, India. Schools, dealers and importers buy it factory-direct, with quotations and repeat orders handled by the maker.

How should a Ganong's potometer be cleaned and stored?
After each lesson, rinse the glass parts of the Potometer Apparatus (Ganong's) with clean water, drain them fully and store the apparatus dry with the stopcock clean. Keep the varnished wooden base away from standing water to protect its finish.

Is a calibration certificate available for the Potometer Apparatus (Ganong's)?
The Potometer Apparatus (Ganong's) is a demonstration apparatus rather than a measuring instrument sold with documents. If your procurement process needs calibration or inspection paperwork, please discuss it with us through our contact page before ordering.

Request a Quote

For pricing and availability of the Potometer Apparatus (Ganong's), write to us via the contact page or place it in the enquiry cart. Quotations come direct from the manufacturer; mention the quantity and delivery location so we can reply in one step.

Last updated: 24 September 2026

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