Chino Magnetism Corp

It is known that, when a magnet is placed against our skin, there is a noticeable increase of blood flow and an increase in oxygen absorption. As more blood carries nutrients and oxygen to the cells in the affected area, this speeds up the healing process and clears away lactic acids, toxins and waste products.What are neodymium magnets?  Are they the same as "rare earth"?Neodymium magnets are a member of the rare earth magnet family.  They are called "rare earth" because neodymium is a member of the "rare earth" elements on the periodic table.  Neodymium magnets are the strongest of the rare earth magnets and are the strongest permanent magnets in the world.

How can I identify the poles of the magnets?
There are several simple methods that can be used to identify the (Scientific) North and South poles of neodymium magnets.
1)  The easiest way is to use another magnet that is already marked.  The North pole of the marked magnet will be attracted to the South pole of the unmarked magnet.
2)  If you take an even number of magnets and pinch a string in the middle of the stack and dangle the magnets so they can freely rotate on the string, the North pole of the magnets will eventually settle pointing North.  This actually contradicts the "opposites attract" rule of magnetism, but the naming convention of the poles is a carry over from the old days when the poles were called the "North-seeking" and "South-seeking" poles.  These were shortened over time to the "North" and "South" poles that we know them as.
3)  If you have a compass handy, the end of the needle that normally points North will be attracted to the South pole of the neodymium magnet.
(Please note:  In some magnetic therapy applications, the definitions of the poles are reversed from the scientific definition described above.  Please be sure to confirm the proper definition of the poles prior to using magnets for medical purposes)

Do I have to worry about temperature with neodymium magnets?
Yes.  Neodymium Iron Boron magnets are sensitive to heat.  If a magnet heated above its maximum operating temperature (175°F (80°C) for standard N grades) the magnet will permanently lose a fraction of its magnetic strength.  If they are heated above their Curie temperature (590°F (310°C) for standard N grades), they will lose all of their magnetic properties.  Different grades of neodymium different maximum operating and Curie temperatures.  See our Neodymium Magnet Specifications Page for more details.

Are there health or safety concerns with neo magnets?
People with pacemakers or similar medical devices should not handle neodymium magnets.
There are no known health concerns with exposure to permanent magnetic fields.  In fact, many people believe that magnets can be used to speed up the healing process.  You can read more about this on several sites that are accessible from our Links Page.
There are several safety concerns when handling strong magnets.  Please refer to our Safety Page for complete details.

How do I separate large magnets?
Small and medium-sized magnets can usually be separated by hand by sliding the end magnet off of the stack.  Medium-large magnets can often be separated by using the edge of a table or countertop.  Place the magnets a table top with one of the magnets hanging over the edge.  Then, using your body weight, hold the magnet(s) on the table and push down on the magnet hanging over the edge.  With a little work and practice, you should be able to slide the magnets apart. Just be careful that they don't snap back together once they become separated.  For very large magnets (generally 2" and larger), we use a specially made magnet separating tool.  You can see pictures of one of these tools as well as instructions on how to build your own on this page:  Build your own magnet separating tool.

What does the "N rating" of the neodymium magnets mean?
The grade, or "N rating" of the magnet refers to the Maximum Energy Product of the material that the magnet is made from.  It refers to the maximum strength that the material can be magnetized to.  The grade of neodymium magnets is generally measured in units millions of Gauss Oersted (MGOe).  A magnet of grade N42 has a Maximum Energy Product of 42 MGOe.  Generally speaking, the higher the grade, the stronger the magnet.

What is the gauss rating of your magnets?
That depends on the magnet.  Please refer to our Specifications Page for more details.