Bar Magnet – Superior Quality
Product Code : SCL-PLE-11773
The StemAids Superior Quality Bar Magnet is a high-remanence permanent magnet engineered for rigorous empirical study of magnetic field geometry and flux density. Unlike standard consumer-grade magnets, these are manufactured from high-coercivity alloys (Alnico or specially treated Carbon Steel) to ensure long-term magnetic stability. Manufactured to ISO 9001:2015 standards, they are optimized for Secondary and University-level laboratories for mapping magnetic field lines and performing quantitative calculations of magnetic moments.
Technical Specifications
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Tender Specification |
OEM Technical Detail |
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Material Composition |
High-grade Alnico or Premium Magnetized Steel |
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Magnetic Stability |
High resistance to demagnetization (high coercivity) |
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Polarity Identification |
Vivid color-coding (Red for North, Blue for South) with engraved 'N' and 'S' |
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Geometric Form |
Precision-ground rectangular bar with flat, perpendicular faces |
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Protection |
Supplied in pairs with soft-iron "keepers" and non-magnetic spacers |
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Standard Sizes |
Available in 50mm,75mm,100mm, and 150mm lengths |
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ISO Compliance Code |
Manufactured under ISO 9001:2015 Quality Management Systems |
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HS Code |
8505.11.00 (Permanent magnets of metal) |
Key Pedagogical Outcomes (Bloom’s Taxonomy Alignment)
- Field Line Interface: Facilitates student visualization of the dipolar magnetic field, supporting Magnetism Module 101 by allowing the mapping of flux patterns using iron filings or plotting compasses.
- Magnetic Moment Quantification: Enables the physical study of magnetism, allowing learners to apply the formula for magnetic field strength at a distance and calculate the magnetic dipole moment.
- Neutral Point Analysis: Supports the analysis of the Earth's magnetic field by locating "neutral points" where the magnet’s field and the Earth’s horizontal component (Bh) cancel each other out.
- Force Interaction Evaluation: Allows students to evaluate the Inverse Square Law of Magnetism by measuring the force of attraction or repulsion between two magnets at varying distances.
International Logistics & Compliance
StemAids ensures comprehensive OEM readiness for global institutional procurement:
- Packaging: Export-grade seaworthy crating (ISPM-15 compliant). Magnets are packed "opposingly" with iron keepers to create a closed magnetic loop, preventing field leakage that could interfere with electronics during transit.
- Documentation: Includes Manufacturer’s Authorization Form (MAF), Certificate of Conformance (CoC), and a technical datasheet on remanence (Br) and coercivity (Hc).
- Storage Longevity: The "Superior Quality" designation guarantees that these magnets will retain their strength for years if stored correctly with keepers, avoiding the common "fading" seen in economy models.
Direct OEM Sourcing Advantages
Procuring the StemAids Superior Quality Bar Magnet directly ensures vertical manufacturing control:
- In-House Saturation Magnetization: Every magnet is subjected to a massive external field to ensure the magnetic domains are fully aligned for maximum strength.
- Precision Annealing: The steel/alloy undergoes specific heat treatment to optimize its ability to hold a permanent magnetic charge.
- Direct Factory Spares Availability: Guaranteed availability of replacement iron keepers and non-magnetic storage boxes to ensure laboratory sets remain complete.
- Manufacturing Control: Direct oversight of the coating process ensures that the protective paint is resistant to chipping and corrosion, maintaining clear polarity identification over decades of use.
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