Automatic residual pesticide tester residual pesticide tester model: DPRP-410 main technical indicators

Fully automatic residual pesticide tester residual pesticide tester model: DPRP-410 It is compact, beautiful, sensitive and easy to carry. It is suitable for rapid detection of organophosphorus and carbamate pesticide residues in vegetables. To avoid food poisoning caused by excessive pesticide residues in vegetables. The main features are complete, high degree of automation, simple and automatic measurement, automatic printing results. With RS-232 interface, it can be equipped with computer and software. It can transmit measurement data to the network and analyze the monitoring results. The method is rapid, sensitive and accurate, and can quickly detect organophosphorus or carbamate pesticide residues in vegetables, and can detect 5 samples at a time, and quickly print out the test results. Scientific and reliable detection data The operation procedure of the instrument is designed according to the operation process of the Agricultural Industry Standard of the People's Republic of China, "Rapid Detection Method of Organophosphorus and Carbamate Pesticide Residues on Vegetables" NY/T448-2001. Main technical indicators Wavelength: 410nm±3nm Wavelength Accuracy: ±3nm Transmittance Accuracy: ±0.5%T (0-100%T) Repeatability: ±0.3%T Metering: T, A luminosity range: -0.3~ 3A light source: tungsten halogen lamp power supply: AC 220V/50Hz power: 70W instrument size: 374×268×122mm host weight: 11kg application range: This set of instruments is widely used in vegetable wholesale market, vegetable production base, product quality supervision and inspection department, The health and epidemic prevention department, the environmental protection department and the pesticide residue testing department will carry out coarse screening of vegetables containing pesticide residues and timely monitor the inflow of vegetables containing residual poisons into the market to ensure the safety of listed vegetables. Detection principle: According to organophosphorus and carbamate pesticides, it can inhibit the activity of acetylcholinesterase in the insect central nervous system and peripheral nervous system, causing the accumulation of acetylcholine in the nerve conduction medium, affecting normal conduction and causing insect poisoning to death. According to this insect toxicology principle, it is used in the detection of pesticide residues. If the vegetable extract contains no organophosphorus or carbamate pesticides or the residual amount is low, the activity of the enzyme is not inhibited. The substrate added in the test is hydrolyzed by the enzyme, or a small part is hydrolyzed, and the hydrolyzate is The added developer reacts to produce a color. On the other hand, if the vegetable extract contains a certain amount of organophosphorus or carbamate pesticide, the activity of the enzyme is inhibited, and the enzyme cannot decompose the substrate or decompose a small amount of the substrate, so that no color or color change is observed. Small, measuring the change in absorbance with time, calculating the inhibition rate (the degree of inhibition of the enzyme), you can judge the residual toxicity of organic phosphorus or carbamate pesticides in vegetables. Instrument composition: This instrument is mainly composed of light source, filter, sample room (automatic 6 pool), detector, housing, display keyboard, printer and other parts. The instrument can detect 4 to 5 samples at the same time. The instrument detection time takes about 3 minutes, and the test results are printed out at the same time. Instrument Operation: The instrument is very easy to operate. There are six buttons on the keyboard: blank, select, page, sample, print, reset. Commonly used are blank keys and sample keys, and other keys are used for detection. For normal detection, just press a button (blank or sample). The function of each key is as follows: Blank: Used when detecting a blank value of four samples. The 0-bit pool is in neutral (for the instrument to automatically adjust the working state); the sample cell 1 is blank; the sample cell 2-5 is placed for the vegetable sample to be tested. After pressing the blank button, the instrument starts to detect automatically, and after 3 minutes, the test result is printed. Sample: When testing five samples (the blank value automatically takes the previous blank value), the 0-position pool is in the neutral position; the sample pool 1-5 is placed on the vegetable sample to be tested. After pressing the sample button, the instrument starts automatic detection, and after 3 minutes, the test result is printed. Page turning: Auxiliary selection of the key for viewing the absorbance and inhibition rate of the sample tested. When C is displayed, the page appears blank and 1-4 (or 5) indicates the sample. Selection: A selection button that assists in viewing the absorbance and inhibition rate of the sample under test. When C appears with the selection button, press the selection button again: A indicates the absorbance at time 0 (before 3 minutes), B indicates the absorbance value after 3 minutes, and C indicates the inhibition rate of the sample. Print: Used to repeat the test results. The test result can be printed out. Use this button to prevent the printer from paperless, paper jam, and repeat printing. Reset: The process being detected can be temporarily stopped. If the operation is incorrect and needs to be temporarily stopped during the detection, use this button to perform the operation. All data stored in the instrument disappears when the reset button is pressed. This button is generally not used. For details, please refer to the instruction manual “DPRP-410 pesticide residue rapid detector”. If the customer needs to connect with the computer, it needs to be equipped with software and data cable. Configuration: DPRP-410 host 1 liquid storage bottle 1000ml 2 measuring cylinders 500ml 2 Beaker 100ml 2, 250ml 2, 500ml 2, 1000ml 2 dosing device 20ml 2 glass rods 2 standard mouth triangle bottles 2 tubes 20 flat bottom small tubes 20 sampling bottles 20 small reagent bottles 5 Nozzle 40-200 μl 100, 1-5 ml 10 nozzle box 96 hole 60 type 1 sampler (metal tube) 2 tweezers 2 timers 1 pad 2 tube racks 2 plastic wash Bottle 2 pipettes 50 microliters 1 adjustable pipette gun 1-5 ml 1 electronic balance 1 mixer 1 reagent (measured 1000 samples) butyrylcholinesterase 10ml / bottle 5 bottles of cold storage (0-5 ° C) substrate powder can be diluted to 10ml / bottle 5 bottles of refrigerated (0-5 ° C) color developer powder can be diluted to 25ml / bottle 2 bottles of cold (0-5 ° C) extraction reagent powder and 1000ml distilled water can be diluted to measure 1000 samples, 20 bottles of normal temperature

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