Warm tips:
1. Before use, all accessories (except control box, power cord, heating sheet, etc.) need to be soaked in acid solution to remove impurities
2. It is recommended to "pinch the head and remove the tail", so that the extracted acid is more pure (that is, the 1/4 amount of the reagent purified first and the 1/4 amount of the reagent that is about to end are discarded to ensure that the reagent with a lower background is obtained)
3. Personal protection must be done before adding acid, such as: splash-proof glasses, acid-proof gloves, etc.
4. If the acid requirements are higher, the number of purification can be increased