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Pascal's Principle Demonstrator
Pascal's Principle Demonstrator (Product Code: SLE/CH/80) is a glass-bulb and piston apparatus used to show that pressure applied to a confined liquid is transmitted equally in all directions, in school physics lessons. Teachers fill it with water and push the piston, and jets squirt out of every hole in the 50 mm borosilicate bulb with equal reach. It is made by Jain Scientific Equipments Pvt Ltd (ScienceLab), an OEM manufacturer, at its own factory in Ambala, India, as part of its physics lab equipment range.
Specifications
| Parameter | Detail |
|---|---|
| Principle demonstrated | Pascal's law: liquid pressure is transmitted equally in all directions |
| Bulb | Borosilicate glass, 50 mm (2 in) diameter, with holes |
| Operation | Filled with water and pressurised by pushing the piston |
| Overall height | Approx. 250 mm (10 in) |
| Product code | SLE/CH/80 |
| Manufacturer | Jain Scientific Equipments Pvt Ltd (ScienceLab) — OEM |
| Country of origin | India (made in Ambala, Haryana) |
What Is the Pascal's Principle Demonstrator Used For?
It is the quickest way to introduce fluid pressure before moving on to hydraulic lifts, car brakes and hydraulic presses, which all rely on the same principle. Ask the class to predict whether water will leave only the hole in line with the piston; when every jet emerges with the same reach, they have seen for themselves that pressure acts equally throughout the liquid. Older students can then link the demonstration to calculations of force and area, and schools building up their physics lab equipment in India often teach it alongside buoyancy and manometer work.
Carry out the demonstration over a sink or a large tray, because water sprays in several directions at once. Press the piston smoothly rather than forcefully so the glass bulb is not stressed, and hold the unit so the jets point away from observers. Empty and dry the demonstrator after use so no water is left standing in the bulb.
OEM Manufacturer
ScienceLab is the trading name of Jain Scientific Equipments Private Limited, the OEM (original equipment manufacturer) of this demonstrator. The apparatus is made and assembled at the company's own licensed factory at Saha, Ambala, Haryana, India, rather than bought in from a trader. Schools, colleges, institutions, dealers and importers are supplied factory-direct, so questions about a replacement bulb or other spare parts go straight to the maker — just ask us. Read more on our company profile.
Related Laboratory Equipment
Other apparatus for a unit on pressure in fluids:
- Pascal's Sphere — a hollow sphere with nozzles and a hand pump, an alternative design for the same law
- Set to Demonstrate Archimedes’ Principle/Law — the natural next lesson on buoyancy
- Bernoulli Tube Apparatus — extends the topic to pressure in moving fluids
- Manometer, Glass — lets students measure pressure differences in liquids
Further apparatus is listed in our Chemistry Lab Equipment category.
Frequently Asked Questions
What does the Pascal's Principle Demonstrator show?
The Pascal's Principle Demonstrator shows Pascal's law: pressure applied to a confined liquid is transmitted equally in every direction. When the piston is pushed, water leaves every hole in the glass bulb with the same force, so students see the principle at a glance.
How big is the Pascal's Principle Demonstrator?
The Pascal's Principle Demonstrator has a borosilicate glass bulb 50 mm (2 in) in diameter, and the complete unit stands approx. 250 mm (10 in) high, compact enough for a front-bench demonstration in an ordinary classroom.
Does it need power or extra accessories?
No. The Pascal's Principle Demonstrator works by hand: fill it with water and push the piston. The only extras needed are water and a sink or large tray to catch the jets, because water sprays out in several directions at once.
Can students operate it themselves?
Yes, under teacher supervision. Students can push the piston of the Pascal's Principle Demonstrator themselves, but remind them to press smoothly rather than forcefully, because the bulb is glass, and to aim the jets away from other people.
Who manufactures the Pascal's Principle Demonstrator?
Jain Scientific Equipments Private Limited (ScienceLab) is the OEM that manufactures the Pascal's Principle Demonstrator at its own factory in Saha, Ambala, Haryana, India, and supplies it factory-direct to schools, colleges, dealers and importers in India and international markets.
Can I get a replacement glass bulb?
Ask us. Because ScienceLab manufactures the Pascal's Principle Demonstrator itself, requests for a replacement bulb or other spare parts go straight to the maker; quote product code SLE/CH/80 on our contact page and we will confirm what can be supplied.
What should a quotation request include?
For a quotation on the Pascal's Principle Demonstrator, give the product code SLE/CH/80, the number of units, any other fluid-pressure apparatus wanted on the same order, and the delivery location in India or abroad.
Request a Quote
Quotations for the Pascal's Principle Demonstrator come directly from the manufacturer. Send your requirement through our contact page, or save it in the enquiry cart while you plan the rest of your fluids lesson kit.
Last updated: 24 September 2026
