Apparatus Charle's Law
Product Code : LSK-CL-10030
Apparatus Charle's Law (SKU LSK-CL-10030), usually called 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. Schools, colleges, tender contractors and distributors can obtain it from Science Lab Supplies, which supplies it from Ambala, India.
Specifications
The apparatus is built around a glass U-tube of 10 mm diameter. The shorter limb carries a stopcock near its top and is fitted with a scale for reading the trapped gas column, while the longer limb takes a plastic tube. A beaker acts as the reservoir, and 20 ml of mercury is required for use.
| Parameter | Value |
|---|---|
| SKU | LSK-CL-10030 |
| Main tube | Glass U-tube, 10 mm diameter |
| Shorter limb | Stopcock near the top, provided with scale |
| Longer limb | Takes a plastic tube |
| Reservoir | Beaker |
| Mercury required | 20 ml |
| Demonstrates | Volume of a fixed mass of gas proportional to absolute temperature (constant pressure) |
| 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 at constant pressure.
- Higher-secondary gas-law topics: extrapolating the volume–temperature graph to estimate absolute zero.
- 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. Use the contact page for questions, the enquiry cart to build a list, or the lab tender page for tender supply.
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.
Who supplies the Apparatus Charle's Law?
It is supplied by Science Lab Supplies from Ambala, India, and can be quoted with the rest of a school or college gas-laws and heat practical 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.
Related Gas Laws and Heat Apparatus
Gas-law teaching normally runs from Charles's law to Boyle's law and on to kinetic theory, with a thermometer and barometer for readings. These four items complete that sequence on one quotation and match the topics taught alongside this apparatus.
- Apparatus Boyles Law Pressure Type — pressure–volume relationship at constant temperature.
- Kinetic Theory Model — shows the particle motion behind gas behaviour.
- Laboratory Thermometers — for reading the water-bath temperature.
- Metal Barometer — records atmospheric pressure during gas-law work.
Browse the full Chemistry Lab range or all school lab equipment.
Last updated: 25 September 2026
