How to wash vegetables with ozone machine? Soak the vegetables in the pot for a few minutes. It is appropriate to say that nitrogen and chlorine will remain in vegetables after the ozone machine is turned on for a long time, and the ozone will exceed the standard. Generally, an industrial vegetable washer with ozone will inject the ozone generated by the ozone generator into the suction port of the water pump. Because the vegetable washer works continuously, according to the equipment design, the time for vegetables to stay in the water is usually only 1-5 minutes. When the equipment is accepted, the customer can really remove pesticide residues through the special detector (the effect of removing pesticide residues varies according to different vegetables). When the ozone concentration is high, it will do some harm to human body, but the concentration of root ozone in the air is related. Generally, there is no pungent smell, and there is no need to worry when the air flows.