Poisson's Ratio of Rubber Apparatus
Product Code : LSK-EAST-11173
Poisson's Ratio of Rubber Apparatus (SKU LSK-EAST-11173) is a vertical set-up for finding the ratio of lateral contraction to longitudinal extension in rubber, using a cycle rubber tube of about one metre hung on a heavy cast iron stand with a small pointer. It is used in B.Sc. and engineering physics elasticity practicals. Science Lab Supplies makes the apparatus at its Saha, Ambala factory (Plot 448, HSIIDC Industrial Area) in India and sells it straight to colleges, schools, tender contractors and distributors.
Specifications
The table gives each listed detail of the Poisson's ratio set. In short, the specimen is a cycle rubber tube about one metre long, held vertically on a heavy cast iron stand, and a small pointer attached to it marks the change in length as the tube is loaded.
| Specification | Value |
|---|---|
| SKU | LSK-EAST-11173 |
| Measures | Poisson's ratio of rubber |
| Specimen | Cycle rubber tube |
| Tube length | About 1 m |
| Indicator | Small pointer |
| Stand | Heavy cast iron stand |
| Manufacturer | Science Lab Supplies, Saha, Ambala, Haryana |
| Country of origin | India |
Applications and Experiments for the Poisson's Ratio Apparatus
The apparatus is used to show that a stretched rubber tube gets thinner as it gets longer and to put a number on that effect. Rubber gives large, easily read changes, so the experiment suits undergraduate elasticity practicals in physics departments, polytechnics and engineering colleges equipping a properties-of-matter bench.
- B.Sc. physics: determining Poisson's ratio for rubber by loading the tube in steps with Laboratory Slotted Masses, 2.5 kg and reading the pointer.
- Measuring the outer diameter of the tube before and after loading with a Vernier Caliper or an Electronic Digital Vernier Caliper.
- Engineering physics: comparing the behaviour of rubber with metal wires tested for Young's modulus.
- Plotting extension against load to see where rubber stops behaving linearly.
In the usual method the tube is filled with water and loaded at its lower end; the extension comes from the pointer and the volume change from the water level, which together give the ratio.
Standard Scope of Supply
Each set comprises the heavy cast iron stand, a cycle rubber tube of about one metre and the small pointer. Masses, a measuring scale and water-level tubes are separate items, and any of them you need can be added to the quotation as separate lines.
Packing, MOQ and Lead Time
Ask for a quotation for one Poisson's ratio set or for a complete practical batch. Every quotation from Science Lab Supplies states the packing, delivery time and price for the quantity requested, and slotted masses or calipers for the same experiment can be priced alongside it.
Holding an Importer-Exporter Code, Science Lab Supplies is able to ship to buyers in Peru, Egypt, Iraq, Nigeria, Kenya and Ghana. To ask for the price in India or abroad, write through the contact page; you can also collect items in the enquiry cart or read the lab tender page before submitting a tender.
Frequently Asked Questions
Why is a rubber tube used instead of a wire?
Rubber stretches far more than metal under a modest load, so both the lengthening and the narrowing of a one-metre tube are large enough to measure with ordinary laboratory instruments.
What does the pointer do?
The small pointer is fixed to the tube and moves down as the tube extends, so students can read the change in length against a scale at each load step and plot it against the load applied.
Are masses included with the apparatus?
Masses are not part of the set. A slotted mass set can be added to the same quotation so the apparatus arrives ready for the full experiment.
Is Science Lab Supplies the manufacturer or a trader?
Science Lab Supplies manufactures the apparatus itself. The stand, tube mounting and pointer are assembled at its factory in Saha, Ambala, India, and buyers deal with the production unit directly when they ask for a quote.
Related Elasticity Apparatus
The following elasticity and bending items study how solids stretch, twist and bend under load, so they pair well with the rubber experiment in a properties-of-matter laboratory, and any of them can be added to the same quotation as the Poisson's ratio apparatus.
- Rigidity Apparatus (Searle's Pattern) — 30 cm test wire joining two brass rods, with three test wires.
- Young's Modulus Apparatus (Searle's Pattern) — supplied in a case with a ceiling bracket, constant weight and wire.
- Young's Modulus Apparatus (Vernier Type) — complete in a case with wire, ceiling attachment and cast iron constant weight.
- Hooke's Law Apparatus — spring with slotted weight hanger and pointer, complete on a stand.
- Bending of Beam Apparatus — 100 cm metal bar, 25 mm wide and 4.5 mm thick, on a knife-edge stand.
- Cantilever Apparatus — 100 x 18 x 0.3 cm chrome-plated steel bar with a hook at one end.
Browse the full Elasticity and Surface Tension range, the Applied Mechanics range for beams and torsion, or all physics lab equipment.
Last updated: 9 October 2026