Mechanism of actionBecause the Peng neck bottle is an open bottle, when the temperature inside and outside the bottle is the same, the pressure inside the bottle is the same as the outside of the bottle, there is no pressure difference, there is no air flow inside and outside the bottle, so microorganisms cannot enter the bottle and cause pollution.When the organic water immersion solution in the bottle is boiled by heating, air and water vapor flow out of the bottle through the neck, and the gooseneck part is also sterilized, and water vapor condenses and remains in the lowest part of the goose neck. When the heating is stopped .The liquid inside the bottle cools and the water vapor condenses. When the air cools, a pressure difference occurs inside and outside the bottle, and some of the air will enter through the goose neck.However, this air must pass through the water condensed at the lower part of the gooseneck. This water will absorb the microorganisms in the air and ensure that the air entering the bottle is free of microorganisms.When the internal and external temperatures are balanced, no more air will flow, thus ensuring that the organic water immersion solution will not rot.