Apparatus for Demonstrating the Boil-Marriott Law
Product Code : SCL-PL-11814
Apparatus for Demonstrating the Boil-Marriott Law (SKU SCL-PL-11814) demonstrates the Boyle–Mariotte law, usually called Boyle's law: for a fixed mass of gas at constant temperature, volume is inversely proportional to pressure, so PV stays constant. It is built for demonstration and practical work in Class 11 physics and college heat courses. Science Lab Supplies manufactures the apparatus at Plot 448, HSIIDC Industrial Area, Saha, Ambala, India, and offers it to schools, colleges, tender contractors and distributors on its own factory quotations.
Specifications
Tube, tap, gauge, cursor and glass tubes of the Boyle–Mariotte apparatus are listed row by row below. In short, a horizontal transparent tube with a 0–300 cm³ scale is closed by a gas tap with a pressure gauge beside it; a rubber stopper sets the effective length, a 300 x 200 mm cursor varies the volume, and 25, 100 and 500 ml glass tubes are included.
| Specification | Value |
|---|---|
| SKU | SCL-PL-11814 |
| Also known as | Boyle’s law apparatus; Boyle–Mariotte law apparatus |
| Demonstrates | PV = constant for a given mass of gas at constant temperature |
| Tube | Transparent, mounted horizontally |
| Volume scale | 0–300 cm³ |
| Closure | Gas tap |
| Pressure gauge | Located next to the gas tap |
| Rubber stopper | Position selects the effective tube length |
| Cursor | 300 x 200 mm |
| Cursor lid | Rubber |
| Glass tubes | Cylindrical, 25 ml, 100 ml and 500 ml |
| Pressure measured at | 0.5, 1, 1.5 and 2 |
| Demonstration table | Boil-Marriott law table |
| Manufacturer | Science Lab Supplies, Saha, Ambala, Haryana |
| Country of origin | India |
Applications and Experiments for the Boyle's Law Apparatus
The apparatus is used to show that halving the volume of a trapped gas roughly doubles its pressure when temperature is unchanged. Students record volume and pressure pairs and plot P against 1/V, a core gas-law practical and useful heat and thermodynamics lab equipment for schools and colleges.
- NCERT Class 11 physics (Kinetic Theory): Boyle's law and the ideal gas equation.
- Kinetic-theory lessons: linking PV = constant to molecular collisions with the tube walls.
- Plotting P against V and P against 1/V to test PV = constant.
- Air-pressure introduction: atmospheric pressure with the Magdeburg Hemispheres and the vacuum unit of the Bell Jars, before B.Sc. and diploma gas-law practicals.
The cylindrical tubes are glass and the trapped air is under pressure, so change the pressure gradually and use the apparatus under teacher supervision.
Standard Scope of Supply
The set is supplied with the horizontal transparent tube and 0–300 cm³ scale, the gas tap, the pressure gauge, the rubber stopper, the cursor with rubber lid, cylindrical glass tubes of 25, 100 and 500 ml, and the demonstration table for the Boyle–Mariotte experiment.
Packing, MOQ and Lead Time
One set or several can be quoted; the quotation spells out packing, delivery time and price for the number you need. Other gas-law and air-pressure apparatus can be priced on it as well.
Registered with an Importer-Exporter Code, Science Lab Supplies can ship to buyers in Nigeria, Kenya, Ghana, Ethiopia, Tanzania and Uganda. A gas-law bench can be priced after you list the sets in the enquiry cart or write to us via the contact page; colleges buying by tender will find the steps on the lab tender page.
Frequently Asked Questions
What is the Boil-Marriott law?
It is the Boyle–Mariotte law, better known as Boyle's law: at constant temperature, the pressure of a fixed mass of gas is inversely proportional to its volume.
What volume range does the scale cover?
The horizontal tube carries a scale from 0 to 300 cm³, and cylindrical glass tubes of 25, 100 and 500 ml are included for work with different gas volumes.
Is Science Lab Supplies the manufacturer or a trader?
The Boyle–Mariotte apparatus is made in the company's own facility in Saha, Ambala, India, so Science Lab Supplies is its manufacturer and the quotation comes from the maker.
Can it be supplied for a tender?
Yes. Share the quantity, delivery point and specification, and an item-wise quotation will follow based on the parts listed here, alongside any other gas-law items in the tender.
Related Gas and Air Pressure Apparatus
Gas laws are taught alongside pressure gauges, kinetic theory and air-pressure demonstrations. These Physics Lab and Properties of Matter items support the same unit on pressure, from syringe and oil-type Boyle's law sets to a vacuum pump and crushing can, and can go on one quotation with this apparatus.
- Boyle's Law Apparatus — sealed syringe on wooden platforms, compressed by added masses.
- Boyles Law Apparatus, Advanced with Oil — glass tube read against a 0–65 cm³ scale, with a Bourdon gauge.
- Gas-Law Apparatus — 60 mm manometer for 1000–3000 hPa on a metal base.
- Bourdon Gauge — dual-scale dial, 0–50 lb/in² and 0–3.5 kg/cm².
- Kinetic Theory Apparatus — transparent tube with a rubber diaphragm driven by a piston.
- Hand Vacuum Pump — 15 cm³ per stroke, down to 50 mmHg.
- Crushing Can — 260 x 75 mm tin plate can with an air-tight screw cap.
Browse the full Physics Lab range, the Properties of Matter range, or all physics lab equipment.
Last updated: 22 October 2026
