How you can Copper Purity test with milli Ohm meter?

To test copper purity using a milli-ohm meter, you can measure the resistance of a copper sample. First, ensure the sample is clean and free of oxidation, as impurities can affect readings. Connect the milli-ohm meter's probes to the copper sample and record the resistance value. A lower resistance indicates higher purity, as pure copper has a specific resistivity; any significant deviation suggests the presence of impurities.