What does the grade or rating of the magnets mean?
Neodymium magnetic material comes in different grades with different capabilities. In general, the grades balance the thermal capabilities of the material with the maximum energy product. • Do neodymium magnets require a keeper? No, Neodymium magnets will retain their strength for a lifetime without a keeper of any kind. • How do I identify the poles of the magnet? You can use a compass, a gauss meter, or an already identified pole of another magnet. • Is one pole stronger than the other? No, both poles have the same surface gauss. • Can you make a magnet with only one pole? No, as far as we know this is completely impossible. • How is the strength of magnets measured? Gaussmeters are used to measure the magnetic field density at the surface of the magnet. This is referred to as the surface field and is measured in Gauss. Sometimes it is measured in Tesla. Pull Force Testers are used to test the holding force of a magnet that is in contact with a flat steel plate. • What is pull force
