Communicating Vessels
Product Code : SCL-CL-11889
Communicating Vessels (SKU SCL-CL-11889) is a set of differently shaped glass tubes joined at the base and mounted on a stand, used to show that a liquid settles at the same level in every connected vessel whatever its shape or volume. Teachers use it for hydrostatics lessons in middle school, secondary school and college. Distributors, tender contractors, colleges and schools can buy it through Science Lab Supplies, which supplies it from Ambala, India.
Specifications
Several glass tubes of different shapes share a common connection at the bottom and stand upright on a plastic or Bakelite base. When coloured water is poured in, the surface comes to the same horizontal level in every tube, and it stays horizontal even when the apparatus is tilted on its stand.
| Parameter | Value |
|---|---|
| SKU | SCL-CL-11889 |
| Model no. | SCI/LSS-1541 |
| Vessels | Multiple glass tubes of different shapes, connected at the base |
| Stand | Plastic or Bakelite |
| Demonstrates | Equal liquid levels in connected vessels; hydrostatic pressure |
| Supplied by | Science Lab Supplies, Ambala, India |
Applications and Experiments for the Communicating Vessels
The apparatus proves that liquid pressure depends only on depth, not on the shape or volume of the container, so connected vessels fill to one level. It is used in CBSE/NCERT Class 8 and 9 science and Class 11 physics (mechanical properties of fluids), and helps explain water level gauges and similar real-life systems.
- Class 8 science: showing that liquids find their own level.
- Class 11 physics: linking equal levels to pressure depending only on depth.
- Explaining boiler water gauges, water towers and garden-hose levels.
- Tilting the stand to show the free surface stays horizontal.
Standard Scope of Supply
The set is supplied as the connected glass tubes mounted on their stand, as described above. Water, and a little dye to make the levels easy to see, are prepared by the laboratory.
Packing, MOQ and Lead Time
Quotations are available for a single demonstration set or for several sets for group work, and each states the packing, delivery time and price for the number requested. Other hydrostatics apparatus from the range can be quoted at the same time.
Registered with an Importer-Exporter Code, Science Lab Supplies can ship to buyers in the Philippines, Nepal, Bangladesh, Zambia, Rwanda and South Africa. Contact the team using the contact page, or add the set to the enquiry cart; institutions buying through tenders can refer to the lab tender page.
Frequently Asked Questions
What does the Communicating Vessels apparatus demonstrate?
It shows that liquid in connected vessels settles at one level regardless of each vessel's shape, size or volume, because pressure in a liquid depends only on depth.
Are the tubes glass or plastic?
The tubes are glass, so the liquid levels are easy to see; the stand is plastic or Bakelite. Handle the glass carefully when filling and cleaning.
Who supplies the Communicating Vessels?
This set is supplied by Science Lab Supplies from Ambala, India, which quotes schools and contractors for single sets or complete chemistry lab equipment in India orders.
How do I make the levels easier to see?
Add a few drops of food colour or ink to the water before pouring it into the tubes.
Related Fluid Pressure Apparatus
Communicating vessels open the topic of liquid pressure, which these four items continue: pressure measurement, force transmission in liquids, buoyancy and density. Together they make a compact fluids bench for school and junior college physics.
- U-Tube Manometer — measuring pressure using liquid levels.
- Demonstration Hydraulic Press — Pascal's law and force transmission.
- Archimedes Bucket — buoyancy and Archimedes' principle.
- Hydrometer (Density Meter) for Liquids With D<1 — measuring the density of light liquids.
Browse the full Chemistry Lab range or all school lab equipment.
Last updated: 25 September 2026
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