Gas-Law Apparatus
Product Code : SCL-PL-12381
Gas-Law Apparatus (SKU SCL-PL-12381) demonstrates two gas laws on one metal base: pressure rising as volume falls at constant temperature, and pressure rising in proportion to absolute temperature at fixed volume. A 60 mm manometer reading 1000–3000 hPa and a battery-powered thermometer supply the readings for Class 11 physics and college heat labs. Science Lab Supplies makes the apparatus in its own factory at Plot 448, HSIIDC Industrial Area, Saha, Ambala, India, and quotes schools, colleges, distributors and tender contractors directly.
Specifications
The apparatus is mounted on a metal base and carries a dial manometer 60 mm in diameter with a pressure range of 1000 to 3000 hPa, equal to 100–300 kPa. A thermometer powered by one AA battery gives the gas temperature, so pressure, volume and temperature can be recorded together.
| Parameter | Value |
|---|---|
| SKU | SCL-PL-12381 |
| Demonstrates | Pressure–volume law at constant temperature; pressure–temperature law at constant volume |
| Manometer | Diameter 60 mm; range 1000–3000 hPa (100–300 kPa) |
| Thermometer | Powered by 1 × AA battery |
| Base | Metal |
| Manufacturer | Science Lab Supplies, Saha, Ambala, Haryana |
| Country of origin | India |
Applications and Experiments for the Gas-Law Apparatus
Students compress a fixed mass of air and read the manometer to confirm that pressure times volume stays constant, then hold the volume fixed and warm the gas to show pressure rising with absolute temperature. Covering two laws on one unit makes it efficient heat and thermodynamics lab equipment for schools and colleges.
- Class 11 physics: Boyle's law, pressure and volume at constant temperature.
- Class 11 physics: the pressure law, and extrapolating to absolute zero.
- Kinetic theory of gases: linking the measured laws to molecular motion.
- B.Sc. and diploma heat labs: plotting P–V and P–T graphs from real readings.
Standard Scope of Supply
Each unit is supplied mounted on its metal base with the 60 mm manometer (1000–3000 hPa) and the thermometer that runs on one AA battery. A water bath or heat source for the constant-volume experiment is not part of the apparatus and can be quoted separately.
Packing, MOQ and Lead Time
Science Lab Supplies will quote one gas-law unit for a teacher's demonstration or a number for student groups. The quotation states packing, delivery time and price for that quantity, and other items on a physics lab equipment list for Class 11 and 12 can be added to it.
Science Lab Supplies, a registered exporter with an Importer-Exporter Code, can ship to buyers in Vietnam, Malaysia, Peru, Egypt, Iraq and Nigeria. For a quotation, write in through the contact page or collect items in the enquiry cart; the lab tender page explains tender supply.
Frequently Asked Questions
Which gas laws can this apparatus show?
It shows that gas pressure increases as volume decreases at constant temperature (Boyle's law), and that pressure changes in proportion to absolute temperature when the volume stays fixed (the pressure law).
What is the manometer range?
The 60 mm manometer reads from 1000 to 3000 hPa, that is 100 to 300 kPa, covering pressures from about atmospheric up to roughly three times atmospheric during compression.
Is Science Lab Supplies the manufacturer or a trader?
Science Lab Supplies is the manufacturer. The Gas-Law Apparatus is produced at its Saha, Ambala plant in India, so quotations and technical replies come from the people who make it.
Related Gas-Law and Pressure Apparatus
Gas-law lessons draw on separate Boyle's law setups, atmospheric pressure demonstrations and accurate temperature readings. These four items give a school or college physics department a complete gas and pressure bench for practicals and can be quoted together with the Gas-Law Apparatus.
- Boyle's Law Apparatus — a dedicated pressure–volume setup.
- Apparatus for Demonstrating the Boil-Marriott Law — another design for the same law.
- Crushing Can — shows the force of atmospheric pressure.
- Thermometer Set — liquid, digital and infrared thermometers.
Browse the full Physics Lab range or all physics lab equipment.
Last updated: 25 September 2026
