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Magnetic Field Tube
Magnetic Field Tube (Product Code: SLE/MG/17) is a sealed plastic display cylinder filled with steel filings, used to show the three-dimensional shape of a magnetic field in school physics and science classrooms. Teachers slide the included alnico cylindrical magnet into the 1/2-inch hole through the centre, and students see the filings gather around it in 3-D rather than as a flat pattern on paper. It is supplied by Jain Scientific Equipments Pvt Ltd (ScienceLab), Ambala, India, for schools adding to their physics lab equipment in India.
Specifications
| Parameter | Detail |
|---|---|
| Purpose | 3-D demonstration of magnetic fields |
| Tube size | 4 in high x 3 in diameter |
| Construction | Sealed plastic display cylinder, scratch resistant |
| Contents of the tube | 1.3 oz of steel filings |
| Central hole | 1/2 in diameter, runs through the centre of the cylinder |
| Magnet | Alnico cylindrical magnet, included |
| Documentation | Multilingual activity booklet |
| Product code | SLE/MG/17 |
| Supplied by | Jain Scientific Equipments Pvt Ltd (ScienceLab), Ambala, India |
What Is the Magnetic Field Tube Used For?
Iron filings sprinkled on a sheet of paper only show one flat slice of a magnet's field. The Magnetic Field Tube lets a class see the whole field at once: turn the cylinder gently to spread the steel filings, then push the alnico magnet into the central hole. The filings crowd towards the poles and link up in curved chains that wrap around the magnet on every side, making it clear that a field fills the space around a magnet in all directions.
Use it after a flat iron-filings or plotting-compass activity so students can compare the two views, or pass it between groups while they sketch what they see from the side and from the ends. Because the filings stay sealed inside, there is nothing to spill or sweep up, and the multilingual activity booklet gives ready-made classroom activities. This makes it a tidy item for a magnetism experiment kit used across several classes.
Supplier
Jain Scientific Equipments Private Limited, which trades as ScienceLab, supplies the Magnetic Field Tube from Ambala, Haryana, to schools, colleges, dealers and institutions in India and international markets. It can be quoted on the same enquiry as the bar magnets, compasses and field demonstrators a magnetism lesson usually needs.
For vendor registration, the supplying company is Jain Scientific Equipments Private Limited (CIN U29309HR2020PTC087597, GSTIN 06AAECJ8618A1ZT). Background on the business is on our company profile.
Related Magnets
Items that work alongside the Magnetic Field Tube in a magnetic-fields lesson:
- Magnetic Field Demonstrator — a flat, sealed field viewer that also works on an overhead projector.
- Compass Plotting (Clear) — shows the direction of the field at each point around a magnet.
- Economy Alnico Bar Magnets — bar magnets for comparing field patterns on the bench.
- Device for Demonstrating Magnetic Field Lines — another way to display field lines to a group.
Browse the full Magnets range for more classroom magnetism products.
Frequently Asked Questions
What is included with the Magnetic Field Tube?
The Magnetic Field Tube (SLE/MG/17) comes as a sealed plastic cylinder holding 1.3 oz of steel filings, an alnico cylindrical magnet that fits its central hole, and a multilingual activity booklet with classroom activities.
How big is the Magnetic Field Tube?
The Magnetic Field Tube is 4 inches high and 3 inches in diameter, with a 1/2-inch hole running through its centre for the magnet. That size suits a teacher's bench demonstration and is easy to pass between small student groups.
Why use a sealed tube instead of loose iron filings?
The Magnetic Field Tube keeps its steel filings inside a sealed, scratch-resistant plastic cylinder, so a class can study a magnetic field without filings spilling on benches or clinging to magnets, and the same tube can be reused in later lessons.
How should the Magnetic Field Tube be stored?
Store the Magnetic Field Tube with the alnico magnet taken out of the central hole and kept away from computers, bank cards and other magnets. Wipe the plastic cylinder with a soft, dry cloth so the filings stay easy to see.
Who supplies the Magnetic Field Tube?
The Magnetic Field Tube is supplied by Jain Scientific Equipments Pvt Ltd, trading as ScienceLab, from Ambala, Haryana, India. The company serves schools, colleges, dealers and institutions and can quote the tube together with other magnetism teaching items.
Can the Magnetic Field Tube be ordered in bulk or for export?
Yes. ScienceLab quotes the Magnetic Field Tube for single schools, dealer orders and larger institutional purchases in India and international markets. Share the quantity and delivery city or port through the contact page or the enquiry cart.
Request a Quote
To get a price for the Magnetic Field Tube, send the number of tubes and your delivery location through our contact page, or add it to the enquiry cart with any other magnetism items you need.
Last updated: 24 September 2026
