Using this nitrate electrode is easy. First, make sure to read the manual carefully. Then, connect the electrode according to the instructions. When using, immerse it in the solution you want to test. Remember, because we couldn't test it with equipment, you may need to double - check its performance. As for maintenance, keep it clean after each use. Store it in the original packaging to prevent damage. If you notice any major issues, refer back to the manual or contact the relevant support.