1 Pay attention to the date of manufacture and the expiration date. The effective period of organophosphorus pesticides is 2 years for emulsions, 3 years for powders, and 1 year for water. Do not buy pesticides that exceed the validity period.
2 Pay attention to the degree of emulsification of the pesticide. A few drops of the emulsifiable pesticide are dissolved in water and stirred a little. If the milk color appears immediately, there is no flocculation, indicating that the emulsion is stable, it is a good medicine, otherwise it may be invalid.
3 Pay attention to the stratification of pesticides. The emulsifiable concentrate should be even and transparent. If the emulsifier is destroyed, stratification will occur. With these pesticides, the crop will be phytotoxic.
4 Pay attention to whether the pesticide is agglomerated. The effective powder pesticide generally does not agglomerate. If it is found to have agglomeration, it indicates that the pesticide has moisture absorption and moisture.
5 Pay attention to the integrity of the vial. Generally bottled pesticides should be completely labelled and the caps tight.
Laboratory Peristaltic Pumps operates by pumping fluids through the Peristaltic Pump tube squeezed rotating rollers in the pump head that squeeze the liquid out of the tube with compression force.
The peristaltic pump is a liquid delivery device that can control the flow rate. It has the characteristics of high delivery accuracy, strong corrosion-resistance, small shearing effect, simple operation, easy maintenance, and can effectively avoid cross-contamination. It has a very wide range of laboratories. Applications. From cell culture to in vitro organ research, from material preparation to water treatment technology optimization, from food ingredient extraction to food preparation technology improvement, Peristaltic Dosing Pumps may be used as power to achieve accurate fluid transmission and processing operations during the experiment.
The mechanism of this pump`s action which only delivers the liquid by the tube allows fluids to be dispensed without introducing contamination. This makes them ideal for dispensing liquids in both biological and chemical labs.Laboratory Peristaltic Pumps,Lithium Mining Peristaltic Pump,Liquid Additive Peristaltic Pump,Drugs Dispensing Peristaltic Pump
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