1、 Performance characteristics:<?xml:namespace prefix = o ns = 'urn:schemas-microsoft-com:office:office' />

1Adopting microprocessor technology, digital circuits, programmed design, microcontroller control, touch buttons, LCD display

2 Dual use for AC and DC (in car), built-in lithium battery, automatic charging and power-off

3 Adopting high brightnessLEDLamp as light source, silicon semiconductor as signal receiving system, with a long lifespan1010000 hours

4 The cassette part adopts a dual light path mechanism design, which avoids system errors caused by different channels

5Job stability better than national standardsJJG179-90Indicator6Multiply and achieve repeatability to meet the specifications of a grating spectrophotometer

2、 Test project:

1 Nitrogen, phosphorus, and potassium in soil, fertilizers, and plantsOrganic matter, acidity and alkalinity (test paper method)

2 Trace elements such as calcium, magnesium, sulfur, boron, chlorine, silicon, and soil moisture (using combustion method)

3、 Technical parameters:

1 Range and Resolution:0.001-9999

2 Stability: Drift less than three minutes0.003

3 Linear error: less than0.003

4 Repetitive error: less than0.005

5 Sensitivity: Red light≥4.5 ×10^-5 Blue light≥3.17×10^-3

6 Wavelength range:Wavelength range: Red light620±4nmBlue light440±4nmGreen light520±4nm

7 Soil moisture technical parameters Water unit:%（m3／m3）Moisture content testing range:0-100% accuracy:±2﹪、

8.PHValue (pH) measurement technical parameters: (optional)

（1）Test scope:1～14

（2）Error:±0.1

9．Salt content (conductivity) measurement technical parameters: (optional)

（1）Test scope:0.01%～1%

（2）Relative error:±5%

10.The power supply used for this instrument:

a.AC power:180V～240V、50hertz

b.Direct current:12V、5W(In car)

c.Lithium battery:12V、5000MA

11.Quick acting in soilN、P、KSimultaneous extraction of three nutrients at once

12. Test the speed of a soil sample（N、P、K）≤30Minutes (including pre-processing time)

13 Simultaneously testing5A soil sample≤50Minutes (including pre-processing time)1Function and characteristic ：

14．Optical Path: Dual Optical Path Design

15Seismic resistance: qualified(pour:The above technical parameters are all higher than the national standards)

4、 Easy to operate:

Fully equipped: The rapid testing instrument integrates medicine, equipment, and instruments, making it easy to carry and equivalent to a small laboratory,Built in lithium battery, automatic charging and power-off,Convenient for on-site testing and mobile services. The finished medicine can be used immediately after opening the bottle, ensuring fast testing speed. Low cost, measure one nutrient（N、P、K）The cost only needs to be0.7Yuan.
5、 Instrument configuration:Aluminum alloy password box1individual：41×32×18cm, heavy4.7kg）

Coloring dish, straw, set of medicine, filter paper, suction ball, measuring cylinder, angle spoon, aluminum box, reaction bottle220VPower cord12VPower cord (onboard)

Universal type Soil (fertilizer) nutrient rapid analyzerOK-A2、OK-A4、OK-A6The difference between different models: