Pesticide residue detector Pesticide residue detector is based on the principle of enzymatic reaction kinetics. If the tested sample contains organophosphorus or carbamate pesticides, it will inhibit the activity of cholinesterase and affect the reaction speed of the color development system. The pesticide residue (inhibition rate) in the tested sample is determined by measuring the change rate of absorbance of the color development system with time. Shenzhen Fenxi Instrument Manufacturing Co., Ltd. has obtained the national patent certificate (new patent: 201620531841.x appearance patent: 201630158215.6); The pesticide residue detector is used to quickly determine organophosphorus and carbamate pesticide residues in vegetables according to the enzyme inhibition rate method in agricultural standard method (NY/T 448-200 1) and national standard (GB/T5009. 199-2003), and strictly follows the provisions in the standard "Rapid Detection Method of Organophosphorus and Carbamate Pesticide Residues in Vegetables". It can accurately and quickly detect organophosphorus and carbamate pesticide residues in vegetables, fruits, grain, tea and soil. It can be widely used for the determination of pesticide residues in fruits and vegetables in food safety testing and monitoring places such as vegetable testing centers, farmers' markets, supermarkets, environmental protection institutions, vegetable planting bases, restaurants, vehicles and laboratories.
The rapid detector for pesticide residues can be divided into desktop and portable. Has made outstanding contributions to human health. If the user improperly uses the rapid pesticide residue detector, it will damage the instrument and shorten its service life. Only by adopting correct use and maintenance methods can the service life of the instrument be prolonged, which not only saves the cost for users, but also facilitates their use.
A, portable pesticide residue rapid detector instrument maintenance matters needing attention
1. When using the rapid pesticide residue detector for the first time, first make sure whether the lithium battery is fully charged, and users should pay attention to the polarity of the battery plug when installing the lithium battery.
2. If the instrument prompt indicator of the pesticide residue rapid detector is not lit, it means that the current battery power is too low. In order to ensure that the instrument is turned on, the user should charge it in time, otherwise the instrument will automatically turn off. 3. In order to prolong the service life of the instrument, if the instrument is idle for a long time, the rechargeable lithium battery should be taken out and kept in a dry place; Still recharge in time.
4. The environment where the instrument is placed should be kept dry, dust-free and vibration-free.
5. The internal channel of the pesticide residue rapid detector should be kept clean and dust-free. If there is anything dirty, clean it up.
6. Turn off the instrument when it is not in use. After the instrument is turned off, if the power adapter supplies power, the power indicator will light up. If it flashes, it means that the lithium battery is charging.
7. Before using the instrument, you must read the instruction manual of the instrument carefully and follow the operation steps in the instruction manual. If the instrument is abnormal, it shall notify the seller or send it to the designated maintenance point for maintenance. Users are not allowed to disassemble and repair by themselves, otherwise it will affect the seller's provision of quality services in accordance with the instrument maintenance terms.
Second, the desktop pesticide residue rapid detector routine maintenance matters needing attention
1. When using the rapid pesticide residue detector, be sure to keep the colorimetric cell dry, and do not infiltrate the colorimetric cell, otherwise it will affect the measurement results and the service life of the instrument, and even damage the instrument in serious cases.
2. After the instrument is used, it should be wiped clean with dry soft cotton cloth in time. If the instrument is not used for a long time, it should be kept in a dry place in the instrument box to ensure that the instrument has good accuracy, reliability and long service life.
3. Note: It is forbidden to wipe the instrument with strong acid and alkali, and it is forbidden to wash the instrument with water. After introducing the maintenance precautions of pesticide residue rapid detector, I believe you have a certain understanding. If you want to know more about the rapid detector for pesticide residues, you can call Shenzhen Fenxi Instrument Manufacturing Co., Ltd..