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There are several applications which require a means of performing a Magnet Polarity Test.
There are two methods for performing a Magnet Polarity Test.
The first method for a Magnet Polarity Test is to use a magnet of known Direction of Magnetisation and testing for like Poles repelling. More details are given in the Information section below.
The second method for a Magnet Polarity Test is to use an electronic Magnetic Polarity checker (MPI-1). The red LED will light up against a North Pole; the green LED will light up against a South Pole.
An alternative method is to use a compass. The pointer of the compass will point to the North Pole.




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e-Magnets UK » On-Line Shop » Measurement and Experimentation Tools » Polarity Checkers and Pole Identifiers