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Laboratory Ganong's Potometer

Product Code : SCL-BP-12562

Quick Answer: Laboratory Ganong's Potometer is a plant-physiology apparatus that measures water uptake by a cut leafy shoot, giving an indirect estimate of transpiration rate from the movement of an air bubble in a graduated capillary.

Last updated: October 2026

Key Features

Graduated capillary tube for reading bubble movement
Water reservoir with stopcock to reset the bubble
Connection for a cut leafy shoot
Works without an electrical supply

About This Product

The apparatus is filled with water and cleared of trapped air, a fresh shoot cut under water is fitted airtight, and a single air bubble is introduced into the capillary. The reservoir and stopcock set the bubble at the starting mark, and its movement over a fixed time is recorded. Readings can be compared under light, shade, air movement, humidity or temperature changes in lessons on xylem transport and stomatal water loss.

Frequently Asked Questions

Q1. Why is the shoot cut under water?
Cutting the leafy shoot under water reduces air entry into the xylem before it is fitted to the potometer.

For a quotation on the Laboratory Ganong's Potometer, contact School Equipments India.

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Laboratory Ganong's Potometer

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