Tattoo Machine Parts, Two-Tier Tattoo Machine Repair Parts Kit, China Tattoo Machine Parts Yongkang HOBO Tattoo Equipment Manufactory , http://www.china-tattoomachine.com
Pesticide failure identification method
Intuitive method. For powder pesticides, first look at the appearance of the drug, if it is already damply agglomerated, the smell is not strong or there are other odors and can be handcuffed into a group, indicating that it has basically failed; for emulsion pesticides, the bottle is left standing, if the drug The liquid is turbid or delaminated (ie oil-water separation), precipitates are formed or the flocs are suspended, indicating that the agent may have failed. Heating method. Suitable for powder pesticides. Take pesticide 5--10 grams and heat it on a metal plate. If there is a lot of white smoke and there is a strong pungent odor, it means that the medicine is good. Otherwise, the instructions have expired. Floating method. Suitable for wettable powder pesticides. Take a cup of 200 grams of clear water, and then weigh 1 gram of pesticide. Gently and evenly spread it over the surface of the water. Observe it carefully. Wet and submergable water within 1 minute is uninvalidated pesticide, otherwise it is a failure pesticide. Hot melt method. Suitable for emulsion pesticides. Put pesticides with precipitates in warm water in a row. (The water temperature should not be too high, preferably 50 °C - 60 °C). After 1 hour of observation, if the precipitate is slowly dissolved, it indicates that the pharmaceutical has not yet failed and is to be precipitated. After the substance is dissolved, it can continue to be reused; if the precipitate is difficult to dissolve or dissolve, it means that it has failed and can no longer be used. Dilution method. Suitable for emulsion pesticides. Take 50 grams of pesticide, put it in a glass bottle, add 150 grams of water, and shake it for 30 minutes. If the liquid is homogeneous milky white, it means there is no failure. Otherwise, it will be failure pesticide, and the more the upper floating oil will become worse. Oscillation method. Suitable for emulsion pesticides. For the emergence of pesticides in the oil and moisture layer, shake the vial vigorously and observe after standing for one hour. If delamination still occurs, the pesticide has been degraded.