Pesticide Residue Test Meter
Test items: Pesticide residues in fruits and vegetables working principleabout Pesticide Residue Test Meter: According to organophosphorus and carbamate pesticides, it can inhibit the activity of acetylcholine in the central and peripheral nervous systems of insects, so that acetylcholine accumulates in neurotransmitters, affecting normal conduction, causing insect poisoning and death. This principle of insect toxicology is used in pesticides. Residue detection. If the plant extract does not contain organophosphorus or carbamate pesticides or the residues are low, the activity of the enzyme is not inhibited, the substrate added in the test is hydrolyzed by the enzyme, and the hydrolyzed product reacts with the added color developer to produce color. On the other hand, if the activity of a plant extract containing a certain amount of organophosphorus or carbamate pesticides is inhibited or partially inhibited, the substrate added in the test cannot be hydrolyzed or partially hydrolyzed by the enzyme. The color change or the color change is small, the bacteriostatic rate can be calculated by measuring the change of absorbance with time with a spectrophotometer, and the residue of organophosphorus or carbamate pesticides in vegetables can be judged. feature about Pesticide Residue Test Meter: 1. The test results can be qualitative and quantitative. The qualitative display result is the inhibition rate, and the quantitative result is mg/kg. 2. 7-inch large LCD backlit display, the Android system is easy to operate and easy to upgrade. 3. Built-in GPS module (built-in, no need for external antenna), real-time positioning of longitude and latitude, and the accuracy is within 5 meters. 4. The built-in thermal high-speed printer (no need to replace the ribbon) can print barcode, vegetable name, bacteriostatic rate, pesticide content (quantitative), whether it is qualified, test date, test unit (can be modified on the host), longitude and latitude, temperature and humidity, parameters such as radiation. 5. ≥105 vegetable and fruit names can be set on the instrument host 6. The light source self-check is carried out when the instrument is turned on, and there is no need to manually adjust the light block. 7. It can store ≥ 180,000 pieces of detection information, automatically save data, and store data without loss when power off. It has a complete query and statistics function. 8. The response time and the upper limit of the qualified standard can be set on the host 9. Simultaneous measurement of 16 samples, which can be measured simultaneously or individually. The host has a built-in micro-printer, which can report pesticide residue data to the agricultural supervision information system. 10. Use GPRS or WIFI wireless way to upload the stored data to the computer. If equipped with a SIM card, you can send text messages to your phone. 11. User management: In order to prevent misoperation, the host has a built-in customer management system, and users can set user names and passwords. 12. Data query: query according to the test date and test number, and delete the stored measurement data. Data can be deleted, deleted, printed, sorted forward and reverse, sorted by item name, filtered by date, etc. 13. With voice guidance and broadcasting functions, it can be switched between Chinese and English. 14. The host standard tests environmental parameters, such as temperature, humidity, dew point, etc. The environmental parameters can be accessed at the same time or connected to the host separately. All measurement data are displayed on the same interface (optional).| Channel | 16 |
| Wavelength | 410nm |
| Inhibition rate display range | 0 ~ 100% |
| Inhibition rate measurement range | 0 ~ 100% |
| Transmittance accuracy | ≤ ± 1.5% |
| Transmittance repeatability | ≤ 0.5% |
| Photocurrent drift | ≤ 0.5% (3 minutes) |
| Detection limit of pesticide | 0.1~5mg/kg |
| Inhibition rate repeatability | ≤ 5% |
| Detection time setting | 0 ~ 9min arbitrary setting |
| Working environment | Temperature : RT-20℃；Humidity≤85% |
| Earthquake resistance | qualified |
