First, the visual inspection method: For powder pesticides, start by examining the appearance. If the powder is visibly damp, clumped together, has a weak or unusual odor, or can be easily pressed into lumps, it's likely degraded and no longer effective. For emulsifiable concentrates, check the bottle after standing for a while. If the liquid looks cloudy, separates into oil and water layers, forms sediment, or has floating flocs, the pesticide has probably failed.
Second, the heating test: This method works best for dry formulations. Take 5-10 grams of the pesticide and place it on a metal sheet. Heat it gently. If it produces a lot of white smoke and emits a strong, pungent smell, it’s still in good condition. If there's little smoke or an odd odor, the product may have expired.
Third, the floating test: Ideal for wettable powders. Take 200 grams of clean water and add 1 gram of the pesticide. Gently spread it on the surface of the water and observe closely. If it dissolves and disperses within one minute, it's still effective. If it doesn't dissolve quickly or floats without dispersing, it's likely failed.
Fourth, the suspension test: Also suitable for wettable powders. Take 30-50 grams of the pesticide, mix it with a small amount of water to form a paste, then add 150-200 grams of water and shake well. Let it sit for 10 minutes. A good pesticide will remain well suspended, with fine particles that settle slowly. If large particles settle quickly, the product has likely degraded.
Fifth, the shaking test: Best for emulsion-based pesticides. Shake the bottle vigorously and let it rest for an hour. If the emulsion separates into layers, it indicates the pesticide has lost its stability and is no longer effective.
Sixth, the hot-melt test: Suitable for emulsions. Place the precipitated pesticide in a bottle and immerse it in warm water (around 50-60°C) for an hour. If the precipitate dissolves, the product is still usable. If it remains undissolved, the pesticide has likely failed.
Seventh, the dilution test: Ideal for emulsions. Mix 50 grams of the pesticide with 150 grams of water and shake for 30 minutes. A good emulsion should look uniformly milky and show no oil layer or sediment. If oil floats on top or sediment forms, the product is likely degraded. The more oil present, the worse the quality of the pesticide.
Air Purifier
Dynamic disinfection is a process of disinfection and cleaning of air and surfaces in indoor Spaces. A
new method of safe disinfection that does not cause harm or interference to people and the environment on
site.The charged particles and active oxygen components produced by the low-temperature plasma in the
equipment play a major role in the process of killing bacteria and viruses, and have the effect of
broad-spectrum sterilization. It can not only inactivate aerosol plankton in the air and bacteria
and viruses on the surface of object but also effectively decompose formaldehyde and volatile organic
compounds, degrade all kinds of bad smell and purify it Air environment.A small amount of high purity
zone.
Air purifiers, also known as "air cleaners", air purifiers, and purifiers, refer to decoration pollution that can absorb, decompose or convert various air pollutants (generally including PM2.5, dust, pollen, odor, formaldehyde, etc. , bacteria, allergens, etc.), household appliances that effectively improve air cleanliness, are mainly divided into household, commercial, industrial, and building.
There are many different technologies and media in air purifiers that enable it to provide clean and safe air to the user. Commonly used air purification technologies include: adsorption technology, negative (positive) ion technology, catalytic technology, photocatalyst technology, superstructured photomineralization technology, HEPA high-efficiency filtration technology, electrostatic dust collection technology, etc.; material technologies mainly include: photocatalyst, activated carbon, Carbon core filter technology, synthetic fibers, HEAP high-efficiency materials, negative ion generators, etc. Most of the existing air purifiers are composite types, that is, a variety of purification technologies and material media are used at the same time.
Air Sterilizer,Air Disinfector Purifier,Air Cleaner Machine,Air Disinfectant Spray
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