Water has hard water and soft water. Hard water refers to water containing more calcium, magnesium, etc., such as well water, salt water, sea water, etc., and the hardness is generally 18 to 20 degrees. This type of water is not available for pesticide dilution. If the pesticide is diluted with water, the calcium, magnesium and other substances contained in the water can reduce the suspension rate of the wettable agent or the emulsifier in the emulsifiable concentrate to synthesize the calcium and magnesium precipitate, thereby destroying the emulsification performance of the emulsifiable concentrate, which not only reduces the prevention and control of the pesticide. The effect, but also the phytotoxicity. Soft water refers to fresh water such as river water and lake water. It contains less calcium and magnesium and its hardness is about 7.5 degrees. It does not destroy the performance of the agent and reduce the control effect. Dies And Hand Tools,Grommet Kit,Grommet Punch,Eyelet Punch Tool NINGBO ZONGLAN MECHANICAL AND ELECTRICAL EQUIPMENT MANUFACTURE CO., LTD , https://www.zonglaneyelet.com