Apparatus Charle's Law
Product Code : LSK-CL-10030
Apparatus Charle's Law (SKU LSK-CL-10030), also known as a Charles's law apparatus, demonstrates that the volume of a fixed mass of gas is directly proportional to its absolute temperature. It uses a mercury-filled glass U-tube with a beaker as reservoir, and suits gas-law practicals in secondary and higher-secondary chemistry and physics. Science Lab Supplies sends it out from Ambala, India, for schools, colleges, tender contractors and distributors who need a constant-pressure gas-law set.
Specifications
Every part of this 10 mm U-tube Charles's law set has its own row below. In short, the shorter limb carries a stopcock near its top and a scale for reading the trapped gas column, the longer limb takes a plastic tube, a beaker acts as the reservoir, and 20 ml of mercury is required.
| Specification | Value |
|---|---|
| SKU | LSK-CL-10030 |
| Main tube | Glass U-tube |
| Tube diameter | 10 mm |
| Shorter limb | Stopcock near the top |
| Scale | Provided on the shorter limb |
| Longer limb | Takes a plastic tube |
| Reservoir | Beaker |
| Mercury required | 20 ml (not included) |
| Demonstrates | Volume of a fixed mass of gas directly proportional to absolute temperature |
| Supplied by | Science Lab Supplies, Ambala, India |
Applications and Experiments for the Charles's Law Apparatus
Students trap a column of air in the scaled limb, warm it in a water bath, and record how the column length changes with temperature. Plotting volume against temperature gives a straight line that extrapolates towards absolute zero, the core idea behind the Kelvin scale.
- Secondary chemistry and physics: verifying Charles's law for a fixed mass of air, with the bath temperature read on alcohol-filled Laboratory Thermometers covering −10 to 100 °C.
- Higher-secondary gas-law topics: extrapolating the volume–temperature graph to estimate absolute zero, with steady heating from a stainless steel Water bath, 7 L.
- B.Sc. physical chemistry and physics labs: introductory gas-law practicals before kinetic theory.
- Teacher demonstrations comparing Charles's law with Boyle's law.
Standard Scope of Supply
The set comprises the 10 mm glass U-tube with its stopcock and scale on the shorter limb, the plastic tube for the longer limb, and the beaker that serves as reservoir. It needs 20 ml of mercury; mercury is a separate item and is quoted only if you ask for it. A thermometer is also needed.
Packing, MOQ and Lead Time
We quote for a single apparatus or for enough sets to equip every bench, and the quotation sets out packing, delivery time and price for that quantity. Thermometers and other school chemistry lab equipment in India from our range can be added to the same enquiry.
As a registered exporter holding an Importer-Exporter Code, Science Lab Supplies can ship to buyers in Egypt, Iraq, Nigeria, Kenya, Ghana and Ethiopia. If your gas-law practical list is ready, paste it into a message on the contact page or build it in the enquiry cart; for bids, the lab tender page sets out the process.
Frequently Asked Questions
Is mercury needed for this apparatus?
Yes, 20 ml of mercury is required. Mercury is toxic: handle it only under teacher supervision, over a spill tray, following your institution's safety rules for mercury storage and disposal.
What does the Charles's law apparatus demonstrate?
It shows that the volume of a fixed mass of gas is directly proportional to its absolute temperature when the pressure is kept constant, so the trapped column on the scaled limb lengthens as the bath warms.
Who supplies the Apparatus Charle's Law?
This U-tube set is a supplied item from Science Lab Supplies in Ambala, India; the company sources it and can list it on one quotation with the other gas-law and heat practicals on your list.
Can it be included in a school lab tender?
Yes. Send the quantity, delivery location and tender specification, and you will receive an item-wise quotation based on the specification above, with mercury and thermometers shown as separate lines if requested.
Related Gas-Law and Pressure Apparatus
Gas-law teaching can run from Charles's law to Boyle's law and on to kinetic theory, with pressure and atmospheric readings alongside. These items from the Chemistry Lab and Properties of Matter ranges cover that sequence, and any of them can share one quotation with this apparatus.
- Apparatus Boyles Law Pressure Type — 80 cm tall unit supplied with a hand pump.
- Charles Law Apparatus, Basic — 15 mm U-tube with a limb graduated 25–35 x 0.2 ml, set in a 1000 ml tall-form beaker with stirrer.
- Charles Law Apparatus (Combined) — Jolly's air bulb with a sliding mercury reservoir for pressure–temperature work at fixed volume.
- Boyles Law Apparatus, Advanced with Oil — thick-walled glass tube read against a 0–65 cm³ scale, behind a transparent safety screen.
- Manometer Cylinder with Piston Temperature Meter — screw-type plunger compresses trapped air while a digital thermometer monitors temperature.
- Kinetic Theory Model — motor-vibrated piston with speed control propels tiny metal spheres to model gas molecules.
- Metal Barometer — 90 mm base with a 57 mm dial field.
Browse the full Chemistry Lab range, the Properties of Matter range for gas-law and pressure apparatus, or all school lab equipment.
Last updated: 9 October 2026
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