Magnetic Field Viewing Film (6x4")
Magnetic viewing film, also known as field detector film, is a micro-encapsulated translucent sheet that allows you to see the location and direction of magnetic poles. It contains a suspension of nickel flakes in oil that aligns with magnetic field lines. When placed on a magnet, the film turns dark where the magnetic field is perpendicular to the surface (the poles) and lighter where the field is parallel (the transitions). This is a non-destructive tool used for inspecting magnets, checking for cracks in magnetic materials, or for educational demonstrations.
Product Features
- Instant Visualization: Reveals hidden magnetic fields, pole patterns, and magnetic flux lines without the mess of iron filings.
- High Sensitivity: Detects fields from small neodymium magnets, rubberized magnetic strips, and electric motors.
- Flexible Material: The 6x4 inch sheet can be bent to wrap around curved surfaces or tubes.
- Reusable: The film resets instantly once removed from the magnetic source; no batteries or chemicals are required.
- Laminated Protection: Sealed surface protects the internal fluid from leaking or drying out during normal use.
Technical Specifications
- Sheet Size: 6 inches x 4 inches (152mm x 102mm)
- Thickness: Approx. 0.2mm - 0.5mm
- Material: Specialized micro-encapsulated magnetic particles in a plastic laminate
- Operating Temperature: 0°C to 50°C (Avoid high heat, as it can permanently damage the encapsulated fluid)
- Color: Dark green/translucent (appears light green when magnetized)
Common Applications
| Use Case | What You See |
|---|---|
| Magnet Inspection | Identify the number of poles and the location of the "neutral zone." |
| Quality Control | Detect cracks or inconsistencies in permanent magnets. |
| Education | Visualize the difference between North/South poles and multi-pole strips. |
| Speaker Repair | Confirm magnetic field strength and alignment in driver assemblies. |
Care and Maintenance
- Avoid leaving the film in direct sunlight or high-temperature environments (like a car dashboard) as the particles can degrade.
- Do not fold or crease the film, as this can break the micro-capsules and leave permanent marks.
- To "reset" the image, simply pull the film away from the magnet or wave it through a neutral area.
Package Contents
- 1 Magnetic Viewing Film Sheet (6" x 4")