The pesticide residue tester, as its name suggests, is an instrument for determining pesticide residues in agricultural products. The instrument is used in a wide range of applications, especially in the context of the continuous occurrence of agricultural product quality and safety incidents in recent years. Under the background of people's attention to pesticide residues, the use of pesticide residue detectors has become more frequent. The pesticide residue tester produced by Yunfei Technology has accurate test results and can quickly detect organophosphorus and carbamate pesticide residues in vegetables, fruits, grains, tea, water and soil. It is suitable for agricultural testing centers and industrial and commercial departments at all levels. , production bases, farmer's markets, supermarkets, health, environmental protection, schools and other fields. In addition, in agricultural testing, the frequency of use of chlorophyll meters in recent years has also increased significantly. Because the chlorophyll meter can not only determine the chlorophyll content of the plant leaves, understand the growth of the plant, but also determine the nitrogen content of the soil and improve the utilization of fertilizer.
The principle of using the pesticide residue tester is as follows: The instrument uses the fastest and simplest speed test card method. By using the speed measurement card method to measure the difference in color development, it can be determined whether the fruit and vegetable sample contains residual organophosphorus or carbamate pesticides. The pesticide residue speed measuring instrument has the following characteristics: Simple operation: This product uses computer to control the temperature time, and can be operated without professional personnel. The detection amount is large: 10 channels can detect 10 samples at the same time; quick and rapid: 10 minutes preheating A batch test can be completed in 3 minutes; the configuration is complete: a complete set of inspection tools is arranged in the precision instrument box.
When using the pesticide residue tester, it is necessary to follow certain operating procedures, as follows:
1. Turn on the power, the instrument starts self-test, and after the set temperature is reached, the instrument automatically prompts;
2. The quick test card test paper transparent film is peeled off, the test paper is folded along the middle line, the red pill is inserted upward into the test paper, the test paper fold line is placed under the press paper rib, and the white pill is placed on the heater;
3. Pipette a small amount of extract with a dropper, and drop two drops of extract on the white end of the test strip, and replace the straw with each sample;
4. Press the instrument start button and start heating to TEMP1. The buzzer will sound once and the TIME1 countdown will be automatically performed. After the TIME1 countdown is completed, the buzzer will sound three times, prompting to close the front cover. After closing the front cover, it automatically enters the TIME2 countdown. After the TIME2 countdown is completed, the buzzer continuously sends out “哗, 哗, 哗†to open the front cover and stop heating. In the whole process, press the start button to abort the operation. In the whole process, press the “DISP†button to switch the time and temperature display;
5. Open the top cover of the quick tester and observe and record the color change of the white tablets on the quick test card. The blue color is negative, the light blue is weakly positive, and the white is strong positive. If it is operated according to the requirements every time, the life of the instrument will be longer, and under normal circumstances, it will not encounter maintenance or other unnecessary failures.
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