一、Working principle

   According to the insect toxicology principle where organic phosphorus and carbamate based pesticides can restrict the activity of acetylcholine enzyme in median nerves and peripheral nervous system, which cause the accumulation of acetylcholine medium of nerve conduction, it will affect the normal conductivity, and insects will die of toxicosis, it has been used in the testing of pesticide residue. If the solution extracted out of vegetables contains no organic phosphorus or carbamate based pesticides or has lower residual, the activity of enzyme will not be restricted, the substrate added in the test will be hydrolyzed by enzyme, and the hydrolysate will react with the developer added to produce colors(s). On the contrary, if the solution extracted out of vegetables contains certain organic phosphorus or carbamate-based pesticides, the activity of enzyme will be restricted, the substrate added in the test will not be or little hydrolyzed by enzyme, and there will be no or little color changes, take a spectrophotometer to determine the light absorption value carrying with the time, and calculate the restriction rate, so as to judge the residuals of organic phosphorus or carbamate-based pesticides in vegetables.

二、Application

    This detector is suitable for pesticide residue rapid detection in the field of food safety inspection and supervision, vegetable production base, wholesale vegetable market, supermarket, hygiene and epidemic prevention and environmental protection.

三、Features

1、Two detecting results display is adjustable: qualitative result with restriction rate, quantitive result with the mg/kg.

2、7.0 inch touching screen, Android operation system.

3 、Produced by the GB/T5009.199-2003.

4、Built-in printer can print the bar code, vegetable name, restriction rate, pesticide content(Quantitive), whether qualified, detecting date, detecting unit(could be modified on the host), temperature, humidity, etc.

5、More than 105 kinds of name(fruits, or vegetables) could be set on the device.

6、More than 180,000 groups of detecting data storage. Transmit the storage data to computer by GPRS or WIFI.

7、16 kinds of samples can be detected meanwhile, also could be detected separately, built-in micro printer,the data could be transmited to computer.

8、Users can set the Admin and password to protect the instruments.

9、Detecting for the temperature, humidity, dew point.(Optional)

四、Parameter：

1、Channel：16

2、Wave length：410nm

3、Restriction rate measuring range：0～100%

4、Transmittance Precision：≤±1.5%

5、Transmittance repeated：≤0.5%

6、Photocurrent stability：≤0.5%（min）

7、Pesticide detection limit：0.1～5mg/kg

8、Restriction rate repeated：≤5%

9、Testing time：0～9min or other

10、Working environment：room temperature about 20℃ ，humidity less than 85%

11、Power: AC 220V

五、Configuration

    Instrument Box: host computer, electronic scale, colorimetric ware, printer, communication software, power cable, liquid handling and power lines, etc.

Drug box: triangular bottle, measuring flask, hopper, measuring cylinder, reaction bottle, aluminum box, wash bottle and drug (1 set), etc

六、Warranty

The warranty for the host is 5 years.