Surface-Tension Demonstration Set
Product Code : SCL-PL-12389
Surface-Tension Demonstration Set (SKU SCL-PL-12389) combines a sensitive 0.1 N dynamometer, a suspension ring, a 1000 ml vessel and shaped wire frames for measuring the pull of a liquid surface and showing liquid films. It supports properties-of-matter lessons in school physics and surface-tension practicals in colleges. Science Lab Supplies manufactures the set at Plot 448 in the HSIIDC Industrial Area of Saha, Ambala, India, and sells it directly to schools, colleges, tender contractors and distributors.
Specifications
Measurements use a dynamometer with a range of 10 g (0.1 N) and a suspension ring, with the liquid held in a 1000 ml plastic vessel of Ø168 × 55 mm. Five nickel-plated steel wire frames, each with a suspension hook, include a rectangular frame with a movable side.
| Parameter | Value |
|---|---|
| SKU | SCL-PL-12389 |
| Dynamometer | 1, range 10 g / 0.1 N |
| Vessel | 1, plastic, 1000 ml, Ø168 × 55 mm |
| Suspension ring | 1 |
| Wire frames | Circular, semicircular, quadrilateral, cube-shaped, and rectangular with movable side |
| Frame material | Nickel-plated steel wire, each with suspension hook |
| Manufacturer | Science Lab Supplies, Saha, Ambala, Haryana |
| Country of origin | India |
Applications and Experiments for the Surface-Tension Set
The set measures the force a liquid surface exerts on a ring pulled from it and shows soap films stretched across frames of different shapes. As school physics lab equipment it fits the mechanical properties of fluids chapter in Class 11, and it also serves introductory B.Sc. surface-tension work.
- Class 11 physics: surface tension as force per unit length, using the ring and dynamometer.
- Comparing water with soapy water or other liquids.
- Soap films on the flat frames and minimum-area surfaces on the cube frame.
- Rectangular frame with movable side: a film contracting to reduce its area.
Standard Scope of Supply
Each set contains one 0.1 N dynamometer, one 1000 ml plastic vessel, a suspension ring, and circular, semicircular, quadrilateral, cube-shaped and rectangular wire frames, the last with a movable side. Soap solution and test liquids are prepared by the laboratory.
Packing, MOQ and Lead Time
Science Lab Supplies will quote one set for a teacher demonstration or several for a class practical, stating packing, delivery time and price for that quantity. Other physics lab equipment in India from the same range, such as capillary apparatus, can join the same quotation.
As an exporter with an Importer-Exporter Code, Science Lab Supplies can ship to buyers in Ethiopia, Tanzania, Uganda, the UAE, Saudi Arabia and Oman. Get in touch via the contact page, or add the set to the enquiry cart; tender enquiries are covered on the lab tender page.
Frequently Asked Questions
How is surface tension measured with this set?
The ring hangs from the 0.1 N dynamometer, is lowered onto the liquid and raised slowly. The reading just before the film breaks gives the surface-tension force acting on the ring.
What are the wire frames used for?
Dipped in soap solution, the frames hold films that show how a liquid surface contracts. On the rectangular frame, the film visibly pulls the movable side inwards.
Is Science Lab Supplies the manufacturer or a trader?
Science Lab Supplies manufactures the set itself in its factory in the HSIIDC Industrial Area at Saha, Ambala, India, so each quotation comes from the maker and not from a trading intermediary.
Can the set be quoted for a school tender?
Yes. Share the tender specification, number of sets and delivery address, and an item-wise quotation will list the dynamometer, vessel and frames described on this page.
Related Properties of Matter Apparatus
Capillary rise and force measurement are natural companions to surface-tension work, so the four items below cover both: a capillary demonstration, loose glass capillaries for student use and two kinds of force meter, all of which can be priced on the same quotation.
- Capillary Tube Apparatus — six capillary tubes of different bores in a trough.
- Capillary Tubes — 1 mm glass capillaries.
- Set of Spring Force Meters with Different Ranges — capacities from 1 N to 20 N.
- Digital Force Meter — digital push-pull gauge up to 20 N.
Browse the full Physics Lab range or all physics lab equipment.
Last updated: 25 September 2026
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