Simple Pascal Law Experiment (Pressure String)
Product Code : LSK-POM-11195
Simple Pascal Law Experiment (Pressure String) (SKU LSK-POM-11195) is a hollow ball pierced with small holes around one circumference and joined to a branch tube with a piston; pushing the piston sends equal jets of water from every hole, showing Pascal's law. It is used in school and college physics. Science Lab Supplies makes the apparatus in its own factory at Plot 448, HSIIDC Industrial Area, Saha, Ambala, India, and delivers it direct to schools, colleges, tender contractors and distributors.
Specifications
Here is each specification of the Pascal pressure-string ball in table form. In short, a hollow brass or glass ball with a ring of small holes around one circumference is attached to a branch tube carrying a piston, and pushing the piston drives water out of every hole equally.
| Specification | Value |
|---|---|
| SKU | LSK-POM-11195 |
| Ball | Hollow ball |
| Ball material | Brass (metal) or glass |
| Holes | Small holes along one circumference |
| Tube | Branch tube with piston |
| Operation | Holes held in a horizontal plane while the piston is pushed in |
| Observation | Water streams out to the same distance from each hole |
| Demonstrates | Pressure is transmitted equally in all directions (Pascal's law) |
| Manufacturer | Science Lab Supplies, Saha, Ambala, Haryana |
| Country of origin | India |
Applications and Experiments for the Pascal Law Pressure String
Fill the ball and tube with water, hold the holes level and push the piston: the jets travel the same distance from each hole, so the pressure applied at the piston has reached every point equally. The set suits Class 11 fluid mechanics and is useful physics lab equipment in India for demonstrations.
- Class 11 (Mechanical Properties of Fluids): demonstrating Pascal's law before introducing hydraulic machines such as the Demonstration Hydraulic Press.
- NCERT Class 8: showing that liquids pass on pressure in every direction, not only downwards.
- Contrasting the equal jets here with the depth-dependent jets of the Fluid Pressure Apparatus (Spouting Cylinder).
- Linking the law to vehicle brakes with the Hydrostatic Pressure Mechanical Brake Model.
Work over a sink or tray, push the piston smoothly, and handle the glass-ball version with care.
Standard Scope of Supply
Each apparatus comprises the hollow ball, in brass or glass as ordered, with small holes along one circumference, and the branch tube fitted with its piston. Water is the only other thing needed for the demonstration, with a tray or sink to catch the jets.
Packing, MOQ and Lead Time
One unit for a teacher's demonstration or several for group work can be quoted. Science Lab Supplies sets out the packing, delivery time and price for whichever quantity you give, noting brass or glass for the ball, and related hydraulic items can go on the same quote.
Having an Importer-Exporter Code, Science Lab Supplies is able to ship to buyers in Peru, Egypt, Iraq, Nigeria, Kenya and Ghana. Name your preferred ball material when you write through the contact page, add the set to the enquiry cart, or go via the lab tender page for a formal bid.
Frequently Asked Questions
How does the Simple Pascal Law Experiment (Pressure String) work?
The ball and branch tube are filled with water. With the holes held in a horizontal plane, the piston is pushed in and water streams out of every hole to the same distance, showing equal transmission of pressure.
Is the ball made of brass or glass?
The hollow ball is offered in brass or in glass. Both versions have small holes along one circumference and the same branch tube with piston; state which material you need when you ask for a quotation.
Why must the holes be held horizontally?
When all the holes are at the same level, the water depth above each is the same, so equal jet distances show that the piston pressure is passed on equally in every direction rather than varying with depth.
Is Science Lab Supplies the maker or a reseller of this apparatus?
The maker. Science Lab Supplies produces the pressure-string set at its Saha, Ambala factory in India, so the quotation, technical answers and dispatch all come from the manufacturing source.
Related Pascal's Law and Hydraulic Apparatus
The apparatus below shows Pascal's law in other forms, from a larger nozzle sphere to working hydraulic presses, or covers neighbouring liquid-pressure ideas, and each item can be quoted together with the pressure string for a complete hydraulics lesson.
- Pascal's Law Demonstrator — larger version of the same demonstration, built on an 8 cm metal sphere.
- Fluid Pressure Apparatus, Hydraulic Press — pistons topped with circular discs for loading masses, mounted on a base.
- Hydraulic Press Model — two cylinders of different diameters with a normal operating pressure of 2–2.2 MPa.
- Force Pump — glass cylinders with non-return float valves that eject water through a jet.
- Liquid Level Apparatus — four differently shaped glass tubes joined at the bottom on a bakelite stand.
- Communicating Vessels — shows the liquid surface staying horizontal even when the stand is tilted.
- U-Tube Manometer — glass U-tube with an 80–0–80 scale in 2 mm divisions on a 400 x 80 mm panel.
Browse the full Properties of Matter range, the Physics Lab range for hydraulic press models, or all physics lab equipment.
Last updated: 9 October 2026