Ganong’s Potometer

Product Code : SCL-LG-11981

Ganong’s Potometer (SKU SCL-LG-11981) is a glass potometer with a graduated horizontal capillary, a plant chamber and a stopcock-controlled water reservoir, used to measure water uptake by a leafy shoot as an estimate of transpiration. Its quick bubble reset suits repeat readings in college botany practicals and senior-school biology. Science Lab Supplies takes enquiries for it at Ambala, India, and quotes schools, colleges, tender contractors and distributors.

Specifications

The table splits Ganong’s design into its individual parts. In short, a narrow-bore graduated capillary runs horizontally from the plant chamber so the bubble travels along a level scale, and a stopcock-controlled reservoir pushes the bubble back between trials; bore, graduation interval and reservoir volume are confirmed on the quotation.

Applications and Experiments for Ganong’s Potometer

Because the reservoir and stopcock reset the bubble quickly, this potometer suits several timed readings in one session. Students record bubble travel per minute, reset, repeat, and then change a single factor such as light, air movement, humidity or temperature to compare transpiration rates.

• NCERT Class 11 biology (transport in plants): measuring the rate of transpiration, with each interval timed on a Digital Stopwatch.
• B.Sc. botany plant-physiology practicals: effect of light and wind on water uptake, with light from Miniature Lamps on Clamp Stands.
• Senior-school biology: demonstrating the transpiration pull and xylem transport.
• Repeat-trial exercises: averaging readings and plotting rate graphs.

Operate the stopcock gently, cut the shoot under water, and never force stoppers onto the glass connections. A Retort Stand with Boss Head and Clamp can hold the shoot steady.

Standard Scope of Supply

The set consists of one graduated horizontal capillary tube, one plant-shoot chamber, one water reservoir, one flow-control stopcock, a funnel or filling section and the connecting glass sections. A leafy shoot, rubber stopper, beaker, timer, support base and sealing compound can be added to the same quotation.

Packing, MOQ and Lead Time

A quotation can be issued for one potometer or a laboratory batch, and it records packing, delivery time and price for exactly that quantity. A beaker, stand or other potometer designs can be added to the same quotation for school biology lab equipment in India.

Being a registered exporter with an Importer-Exporter Code, Science Lab Supplies can ship to buyers in Rwanda, South Africa, Qatar, Sri Lanka, Vietnam and Malaysia. Note the number of practical groups when you write through the contact page, add the potometer and any stand to the enquiry cart, or open the lab tender page for a purchase made by tender.

Frequently Asked Questions

What is the reservoir on Ganong’s Potometer for?
It supplies water to the capillary. Opening the stopcock briefly pushes the bubble back towards its starting mark, so another reading can begin without dismantling the set-up.

Does it measure transpiration directly?
No. It measures water uptake by the shoot. Some absorbed water is retained or used by the plant, so the result is an indirect estimate of transpiration rather than a direct measurement.

Who supplies Ganong’s Potometer?
Science Lab Supplies, trading from Ambala in India, issues the quotation for this apparatus and organises its packing and shipment for schools, colleges and tender contractors.

How is it different from the H-type potometer?
Ganong’s design uses a horizontal graduated capillary with a stopcock-controlled reservoir for resetting, while the Student Potometer ‘H’ type combines its plant connection, reservoir and capillary in one H-shaped glass piece.

Related Transpiration Apparatus and Teaching Aids

Transpiration practicals pair well with other potometer designs, leaf and tissue anatomy and wider plant experiments. These items from the Lab Glassware, Biology Lab Equipment and Physics Lab ranges, plus charts and slides, can all be priced on the same quotation as Ganong’s Potometer.

• Student Potometer ‘H’ type — H-type glass potometer for comparative water uptake over time.
• Farmers Potometer — wide-mouth bottle that gives a stable base for the shoot and capillary.
• Potometer Apparatus — shoot sealed into a stopper, capillary end dipped in a beaker of water.
• Potometer — glass plant support on a water bottle for absorption-rate demonstrations.
• Kit for Demonstration of Transpiration in Plants — colouring liquid, glass tube and clamp on a tripod.
• Monocot Leaf T.S. Educational Chart — mesophyll, stomata, guard cells and vascular bundles.
• Plant Tissue Biology Practical Slide — prepared slide of plant tissue structure for the microscope.
• Biology Set BP1: Plants 1 — materials for 23 plant experiments, including water transport and stomata.

Browse the full Lab Glassware range, the Biology Lab Equipment range, or all school lab equipment.

Last updated: 9 October 2026