Demagnetizing and Magnetizing Apparatus STEM Lab Manufacturer,Supplier and Exporter in India
Product Code : SCL-M-12567
Quick Answer: The Demagnetizing and Magnetizing Apparatus STEM Lab is a solenoid of heavy-gauge enamelled copper wire on a hollow polymer cylinder, 250mm long with a 35mm bore, that magnetises a specimen on 6V to 12V DC and demagnetises it on 12V AC. A soft iron rod, a carbon steel bar and a test compass are included.
Last updated: October 2026
Key Features
- Solenoid of heavy-gauge enamelled copper wire on an insulated hollow polymer cylinder
- Bore 250mm long and 35mm in internal diameter
- DC mode for magnetising at 6V to 12V DC; AC mode for demagnetising at 12V AC
- Maximum continuous current of 6 Amperes, with auto-reset thermal fuse
- 4mm terminal jacks and a momentary power switch on a laminated baseplate
- Soft iron sample rod, carbon steel test bar and testing compass included
Technical Specifications
| Specification | Value |
|---|---|
| Coil | Heavy-gauge enamelled copper wire on hollow polymer cylinder |
| Bore | Length 250mm, internal diameter 35mm |
| DC input (magnetising) | 6V to 12V DC |
| AC input (demagnetising) | 12V AC |
| Maximum current | 6 Amperes continuous, auto-reset thermal fuse |
| Included | Soft iron rod, carbon steel test bar, testing compass |
About This Product
The steel bar is first checked against the compass, placed in the coil and given a short burst of 12V DC, after which it deflects the needle strongly as a permanent magnet. Switching to 12V AC and drawing the bar slowly out of the coil while the field is running removes the magnetism again, and repeating the test with the soft iron rod shows why soft iron keeps little magnetism while hard steel keeps it, introducing domains, retentivity and coercivity. Laboratories and colleges in Brunei, Solomon Islands, Mauritania, Peru and Uganda can buy the Demagnetizing and Magnetizing Apparatus STEM Lab through an export order.
Frequently Asked Questions
How is a specimen demagnetised in the Demagnetizing and Magnetizing Apparatus STEM Lab?
With 12V AC running through the coil, the magnetised bar is pulled slowly out along the axis, so the reversing field weakens as it leaves and the domains are left disordered.
Related: Magnetism, Oersted’s Law Apparatus STEM Lab and Ampere Law Apparatus STEM Lab.
For a quotation on the Demagnetizing and Magnetizing Apparatus STEM Lab, contact Educational Instrument.
