This is a listing for genuine 'Nanobrick Magnetic Flux Display Film' manufactured in Korea (not a cheap copy from China) and held in stock in the UK for fast despatch, all over the world.

Free Post to the UK. Tracked International Post to the world.

Magnametals are pleased to confirm that they are the UK distributor of the revolutionary MX-Film, manufactured by Nanobrick Co., Ltd in Korea.

The film works in an innovative way when placed directly on magnets, or something that contains a magnet such as a mobile phone.

MTX FILM is a Magnetically Tunable Photonic Crystal Material. The strength of the magnetic field is measured in Gauss. Depending on the Gauss reading, the film will change colour accordingly. When placed on a complicated magnetic array, the film might change into up to 6 different colours simultaneously.


    Gauss / Colour

50G Orange 

70G Yellow

100G Light Green

150G Green   

200G Blue    

300G Dark Blue  

A small colour Gauss chart for you to compare the the colours you encounter is included with every purchase. A photo of the Gauss chart is among the photographs on this listing.

MTX-Film has the advantage that as soon as it is taken away from the magnetic field it will immediately revert back to it's original colour. 

There are 11 different sizes of MTX-Film, which are NOT housed in a black thick paper frame. This means that the film of thickness 150~200 (μm) which is very flexible, is able to be wrapped around any curved or irregularly shaped object to test for the magnetic field.


    The 11 standard sizes are ready and waiting to be sent quickly to you. If you have a specific size requirement, we can make it to your      requirements at no extra cost. You pay only for the square area of the film you want. No nasty surprise extras.  

This is a listing for genuine 'Nanobrick Magnetic Flux Display Film' manufactured in Korea and held in stock in the UK for fast despatch, all over the world.

Free Post to the UK. Tracked International Post to the world.


Magnametals are pleased to confirm that they are the UK distributor of the revolutionary MX-Film, manufactured by Nanobrick Co., Ltd in Korea.

The film works in an innovative way when placed directly on magnets, or something that contains a magnet such as a mobile phone.

MTX FILM is a Magnetically Tunable Photonic Crystal Material. The strength of the magnetic field is measured in Gauss. Depending on the Gauss reading, the film will change colour accordingly. When placed on a complicated magnetic array, the film might change into up to 6 different colours simultaneously.


    Gauss / Colour

50G Orange 

70G Yellow

100G Light Green

150G Green   

200G Blue    

300G Dark Blue  


MTX-Film has the advantage that as soon as it is taken away from the magnetic field it will immediately revert back to it's original colour. 

This listing is for 11 different sizes of MTX-Film, which are NOT housed in a black thick paper frame. This means that the film of thickness 150~200 (μm) which is very flexible, is able to be wrapped around any curved or irregularly shaped object to test for the magnetic field.

***** Please note:- The film has NO Magnametals logo or size in mm printed on it. These are only on the photos to reduce the chances of Chinese sellers pinching my photos to advertise against me here on eBay. Please note that most of the 'interesting photos' of the standard US magnetic field viewer film were taken by me years ago but are routinely used by Chinese sellers here on eBay and on the internet.......without my permission.*****        

    The photos show some the hundreds of interesting images that are possible by placing this highly flexible film directly onto different shaped or oriented magnets.  

    You too could experience this fascinating world for yourself in just a few days!

    Enjoy!