The principle and operation method of pesticide residue rapid measuring instrument

The principle and operation method of pesticide residue rapid measuring instrument

Pesticide residue rapid measurement instrument, as the name implies, is an instrument for the determination of pesticide residues in agricultural products. The scope of use of this instrument is very wide, especially after the continuous occurrence of quality and safety incidents of agricultural products in recent years. People are very concerned about the use of pesticide residues, and the use of rapid detection instruments for pesticide residues has become more frequent. The accurate detection results of pesticide residue rapid tester produced by Top Instrument can quickly detect organic phosphorus and urethane pesticide residues in vegetables, fruits, grains, tea, water and soil. It is applicable to agricultural inspection centers and industrial and commercial sectors at all levels. , production bases, farmers markets, supermarkets, health, environmental protection, schools and other fields. In addition, the frequency of use of chlorophyll meters in agricultural inspections has greatly increased in recent years. Because the chlorophyll meter can not only determine the chlorophyll content of the plant leaf, but also understand the growth of the plant, it can also determine the nitrogen fertilizer content in the soil and increase the fertilizer utilization rate.

The principle of use of the pesticide residue tester is as follows: The instrument uses the quickest and simplest test card method. The use of rapid card method to measure the difference in color, you can determine whether fruit and vegetable samples contain organophosphorus or carbamate pesticide residues. The Pesticide Residue Tester has the following features: Easy to operate: This product uses a computer to control the temperature and time, without the need for professionals to operate; Detection of large: 10 channels, can detect 10 samples at the same time; fast and rapid: 10 minutes warm-up A batch test can be completed in 3 minutes; the configuration is complete: a complete set of inspection tools is configured in the precision instrument box.

When the pesticide residue tester is in use, certain operating rules must be followed. The details are as follows: 1. After the power is turned on, the instrument starts self-checking. After reaching the set temperature, the instrument automatically prompts; 2. The transparent film of the test card is released Go, the test paper is folded along the midline, the red pill is inserted into the test paper, the test paper fold line is placed under the pressure ribs, and the white pill is placed on the heater; 3. The dropper is used to draw a small amount of the extract, and two drops are added to the white end of the test paper. Liquid, replace the pipette once for each sample; 4. Press the instrument start button to start the heating to TEMP1, the buzzer will beep once and the TIME1 countdown will be performed automatically. After the TIME1 countdown is completed, the buzzer will sound three times, prompting you to close. cover. After closing the front cover, it automatically enters the TIME2 countdown time. After the TIME2 countdown is completed, the buzzer continuously emits “哗, 哗, 哗” prompts to open the front cover and stop heating. Press the Start button to abort the operation during the entire process. Press “DISP” key to switch time and temperature display during the whole process; 5. Open the cover of the speedometer and observe and record the color change of the white pill on the pesticide speed test card. Blue is negative and light blue is weak. Positive, white is strongly positive. If each use is performed in accordance with the requirements, the life of the instrument will be longer, and in general, it will not encounter maintenance or other unnecessary failures.