Porous Pot (30x75mm) Manufacturer,Supplier and Exporter in India

Product Code : EL-SLE-4685
Jlab Export is a leading Porous Pot (30x75mm) Manufacturer,and suppliers in India

Porous Pot (30x75mm) (code EL-SLE-4685) is a small cylindrical pot of porous porcelain used to demonstrate the diffusion of gases in school and college science labs. Gas molecules pass through the fine pores in its wall, so students can see a light gas such as hydrogen diffuse faster than air. The size is given as 30 x 75 mm. It is made by Jain Laboratory Instruments Pvt Ltd (JLab) at its works in Ambala, India.

Get a quote: use the Add To Cart enquiry button below, or send your quantity and destination through the contact page.

Specifications

How Does It Compare with Other JLab Porous Pots?

Choose this small pot for the gas diffusion demonstration. For building a Daniell cell, the dedicated cell pot or the complete kit with its larger porous pot is the listed choice.

What Is the Porous Pot Used For?

In the classic diffusion demonstration the pot is closed with a one-hole rubber stopper carrying a glass tube whose lower end dips into coloured water. When a gas jar or beaker of hydrogen is held over the pot, hydrogen diffuses in through the porous wall faster than the air inside diffuses out, the pressure inside rises and bubbles stream from the end of the tube. When the hydrogen is taken away, the reverse happens: hydrogen escapes faster than air returns and water climbs up the tube. The experiment makes the kinetic theory of gases visible and illustrates Graham’s law, which states that the rate of diffusion of a gas is inversely proportional to the square root of its molar mass. It suits lessons on diffusion in secondary school and on gas laws in senior-secondary and college chemistry. Porous pots of this kind are also used to keep the two electrolytes of a Daniell cell apart while letting ions pass.

The pores must be open and dry for the demonstration to work. After any wet use, rinse the pot with clean water and let it dry completely before the next run, keep oil and grease off the surface, and handle it with care, as porcelain is brittle.

What to Specify When Ordering

• Quantity — the minimum order is 10 pots; a demonstration set needs one pot per bench, plus spares.
• Fit — if the pot must suit an existing stopper or holder, ask JLab to confirm the outside diameter and height.
• Accessories — one-hole rubber stoppers, glass tubing and gas jars are separate items that can go on the same enquiry.

Frequently Asked Questions

What is a porous pot used for?
It is used to demonstrate gaseous diffusion. Gas passes through the pores of its porcelain wall, so the different diffusion rates of hydrogen and air can be shown with a tube dipping into water.

What size is this porous pot?
The size is given as 30 x 75 mm in the product name. If your apparatus needs an exact fit, ask JLab to confirm the outside diameter and height with your quotation.

Why do bubbles appear when hydrogen surrounds the pot?
Hydrogen molecules are lighter and move faster than the nitrogen and oxygen molecules of air, so hydrogen enters the pot faster than air leaves it. The pressure inside rises and pushes gas out through the tube, in line with Graham’s law of diffusion.

Can this pot be used in a Daniell cell?
Its listing names gaseous diffusion as the use. For a Daniell cell, JLab lists a dedicated porous pot and a complete Daniell cell kit, linked above; ask JLab if you want to use this smaller pot in a cell.

Are the stopper and glass tube included?
No, this listing covers the porous pot only. Rubber stoppers, glass tubing and gas jars are separate catalogue items and can be added to the same enquiry.

What is the minimum order and dispatch lead time?
The minimum order is 10 units, supplied individually. Dispatch is usually within 7–10 working days, and every pot is visually inspected first; export transit time depends on the destination and shipping method.

Who manufactures this porous pot?
Jain Laboratory Instruments Pvt Ltd (JLab) makes it at its works in Ambala, Haryana, India, and quotes for it directly as the manufacturer.

OEM Manufacturer

JLab is the trading name of Jain Laboratory Instruments Pvt Ltd, a school chemistry and physics lab equipment manufacturer in India, incorporated in 2017 and based on Hargolal Road, Ambala, Haryana. This porous pot is made at JLab’s own works and not bought in from a trader, so schools, colleges, dealers and importers buy it factory-direct, each pot is visually inspected before dispatch, and repeat orders are handled by the manufacturer. JLab exports worldwide and ships to buyers in every region — for example Fiji in Oceania, Bulgaria in Eastern Europe, Ivory Coast in West Africa, Brazil in South America and Morocco in North Africa. Institutions buying by tender can see the JLab lab tenders page.

Related Diffusion and Cell Apparatus

• Rubber Corks (with One Hole) — bored stoppers that let a single glass tube pass through, for closing the pot.
• Glass Tubing — soda glass tubing for the tube that dips into the water.
• Gas Jar with Lid, Glass — a lidded glass jar for collecting gases produced in experiments.
• Daniel Cell Porous Pot — the porous pot listed for a Daniell cell.
• Daniel Cell Kit — copper vessel, porous pot and zinc rod for a complete cell.

See more apparatus in the School Lab Equipment range.

Request a Quote

Quotes come direct from the manufacturer. Use the Add To Cart enquiry button on this page, or send the quantity (minimum 10 units), any stoppers, tubing or gas jars you need, and your delivery location through the contact page.

Last updated: 4 October 2026