How to test for pesticide residues at home??? If you don t go to a testing institution, can you dete

It can be detected, as mentioned above, there is also a kind of rapid detection spirit in the pesticide residue rapid detection card, but the effect of both is not very good, but you can rest assured. The cost of testing is not low, and pesticide residues are not as scary as you think, nor are they as simple as you think. There will be more or less, but overall it will not be fatal, drinking pesticides can also be rescued, so what can pesticides be mixed with water for a while?

I've seen a simple and portable box for detecting pesticide residues, which contains relevant reagents, and the operation is quite simple. I forgot what it was called.

You can use a pesticide residue tester, you can call **0755-29450117 for consultation.

The institutions that can be used for pesticide residue testing are: Inger Testing, Pony Testing Group, Food and Drug Administration, etc.

Founded in 2002 and headquartered in Haidian District, Beijing, Pony Testing Group has developed into a large-scale comprehensive inspection and certification group with 26 large-scale experimental bases, 52 wholly-owned subsidiaries and a service network all over the country. On September 16, 2020, Pony Test was successfully issued and listed on the Growth Enterprise Market of Shenzhen ** Exchange, and the company was 300887.

Pony Testing Group Co., Ltd. is a biomedical engineering laboratory approved by Beijing, an engineering technology research center recognized by the Beijing Municipal Science and Technology Commission, and an enterprise technology center recognized by the Beijing Municipal Commission of Economy and Information Technology.

Beijing Pony Medical Laboratory, a wholly-owned subsidiary of Pony Testing Group Co., Ltd., has become one of the new coronavirus nucleic acid testing institutions and undertakes the new coronavirus nucleic acid testing in Beijing.

When measured by spectrophotometer (412 nm wavelength), the inhibition rate is calculated as follows: inhibition rate (%) = [(δ0 δ t) δ 0] 100.

Under certain conditions, organophosphorus and carbamate pesticides have inhibitory effects on the normal function of cholinesterase, and their inhibition rate is positively correlated with the concentration of pesticides.

Under normal circumstances, the enzyme catalyzes the hydrolysis of neuroconduction metabolites (acetylcholine), and the hydrolysate reacts with a chromogenic agent to produce a yellow substance, and the change value of absorbance with time is measured with a pesticide residue detection instrument, and the inhibition rate can be judged whether the sample contains organophosphorus or carbamate pesticides.

Extended Materials. Pesticide residue analysis in food is the identification and quantification of target compounds in complex matrices. The general analysis process of pesticide residues is extraction-purification-detection.

The classic pesticide residue analysis steps are usually as follows: water-soluble solvent extraction - non-water-soluble solvent redistribution - solid-phase adsorption column clean-up - gas or liquid chromatography detection.

The sample pretreatment not only requires the complete extraction of the components to be tested as much as possible, but also removes the impurities existing at the same time as the target as much as possible, avoids the contamination of the column and detector, reduces the interference of the detection results, and improves the sensitivity and accuracy of the detection. Therefore, extraction and purification are a very important pretreatment steps in the process of pesticide residue analysis, and their quality directly affects the correctness and reliability of the analysis results.

The classic extraction and purification methods mainly include: oscillation leaching, tissue mashing, ultrasonic extraction, Soxhlet extraction, liquid-liquid partitioning, column chromatography, azeotropic distillation and other technologies. With the progress of science and technology, sample preparation technology is developing in the direction of time-saving, labor-saving, cheap, solvent saving, reducing environmental pollution, miniaturization and automation. Hope!

Hello, the county agricultural ring station and the township agricultural service center should also be able to do a quick test. Agricultural product quality and safety management inspection station of the agricultural ring station of the county agricultural bureau. Agricultural Products Testing Center under the local Agricultural Bureau.

Local agricultural product inspection stations, or quality inspection stations. Generally, the agricultural product quality monitoring center of the county and municipal agricultural bureaus can be tested. It should be a local testing station to test for pesticide residues.

Counties and townships have agricultural product quality and safety inspection stations.

Summary. The principle of pesticide residue detector can be simply understood as: the effective part of fruits and vegetables is extracted into the liquid, the catalytic reaction of cholinesterase is used, and the decomposition products are transformed into colors, a group of pesticide-free standard solutions are set, and the color will be darker under normal circumstances, which is used as a reference, if the tested sample contains pesticides, the reaction will be inhibited, resulting in a very light color, and the positive and negative results can be determined through the calculation of the inhibition rate.

The rotary pesticide residue detector adopts a precision rotary cell design, and the light source is consistent, which can solve the problem of detection result error caused by the light source error between each channel, and the detection result is more accurate.

Hello, I am honored to answer for you, the newly purchased vegetable pesticide residue measuring instrument can detect pesticide residues.

The pesticide residue tester can detect drug residues in our vegetables and other food ingredients.

The principle of pesticide residue detector can be simply understood as: the effective part of fruits and vegetables is extracted to the liquid, the catalytic reaction of cholinesterase bending is used, and the decomposition product is transformed into color, and a group of standard solutions without pesticides are set, under normal circumstances, its color will be relatively dark, and it is used as a reference, if the sample to be tested contains pesticides, the reaction will be inhibited, resulting in a very light color, and the positive and negative results can be determined through the calculation of the inhibition rate. The rotary pesticide residue air picket detector adopts a precision rotary colorimetric cell design, and the light source is consistent, which can solve the problem of detection result error caused by the light source error between each channel, and the detection result is more accurate.

Why can't the newly bought vegetables be measured with a pesticide residue measuring instrument, but they will show pesticide residues when they are cooked?

Some pesticides do not react at room temperature, and the internal substances may change after high temperature cooking.

I just bought a long bean and used a measuring instrument to test the results show green, that is to say, there is no pesticide residue in the blind letter, boil it in water and let it cool, and then use the instrument to measure the indicator light into red, that is to say, there are pesticide residues, what's the matter.

Some pesticides do not react at room temperature, and the internal substances may change after high temperature cooking. Another possibility is that there is an error in the tester.