How to carry out rapid detection of pesticide residues in supermarkets with pesticide residue detector
In supermarkets, the following steps can be taken for rapid detection of pesticide residues using pesticide residue detectors:
Select representative food samples, such as vegetables, fruits, grains, etc., for pretreatment, such as washing, crushing, etc., for testing.
Put the processed food sample into the pesticide residue detector and test it according to the operating instructions of the instrument. It usually takes a few minutes to ten minutes to get accurate test results.
According to the value displayed by the pesticide residue detector, check whether the pesticide residue in the food exceeds the standard by comparing the standard reference value or the built-in standard of the instrument. If the standard is exceeded, it means that there is a potential safety hazard in the food, and corresponding measures need to be taken in time, such as re-screening or further treatment.
The data of each test can be recorded and analyzed in order to better grasp the change trend of pesticide residues in food and take corresponding measures in time. It should be noted that before using the pesticide residue detector, it needs to be calibrated to ensure the accuracy and stability of the instrument. At the same time, during the sample testing process, it should be noted that the sample placement time should be consistent with the blank control solution placement time to be comparable. If you experience inconsistent sample placement times, you may need to retest.
In addition, for some samples that are prone to false positives, such as onions, garlic, radish, leeks, celery, coriander, coriander, coconut white, mushrooms and tomato juice, whole vegetable extraction or other methods can be used for pretreatment to reduce errors.