3. Scope of the method Developed by Beijing Purui Analytical Instrument Co., Ltd. This method is suitable for the determination of various polyesters in tea, tobacco and other crops. This is a method for extracting and enriching 5 pyrethrin pesticides in tea combined with gas chromatography The new method for detecting and detecting pyrethroid pesticides has the advantages of cost saving, simple operation and accurate results. Very suitable for the detection of pyrethroid pesticide residues in related agricultural products.
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