Observation:
If powdered pesticides are agglomerated, they are not easily broken and prove to be invalid and cannot be reused.
Suspension method:
Take 50 grams of powder pesticide, put it in a glass bottle, add a little water to make a paste, add appropriate amount of fresh water and mix well, place it for 10~20 minutes, good pesticide powder is fine, less and slow precipitation; failure of pesticide particles Precipitation is faster and more.
Burning method:
Take 10-20 grams of powder pesticide, place it on a piece of metal and put it on fire. If you take white smoke, it means that the pesticide has not failed, otherwise it will have become invalid. This method is usually used to identify 5% carbendazim powder.
If powdered pesticides are agglomerated, they are not easily broken and prove to be invalid and cannot be reused.
Suspension method:
Take 50 grams of powder pesticide, put it in a glass bottle, add a little water to make a paste, add appropriate amount of fresh water and mix well, place it for 10~20 minutes, good pesticide powder is fine, less and slow precipitation; failure of pesticide particles Precipitation is faster and more.
Burning method:
Take 10-20 grams of powder pesticide, place it on a piece of metal and put it on fire. If you take white smoke, it means that the pesticide has not failed, otherwise it will have become invalid. This method is usually used to identify 5% carbendazim powder.
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