High-Precision Portable Soil Nutrient Analyzer: Rapid Tester for Nitrogen, Phosphorus, and Potassium

I. Test Items

Soil ammonium nitrogen, soil available phosphorus, soil available potassium, soil nitrate nitrogen, soil hydrolyzable nitrogen, soil total nitrogen, soil total phosphorus, soil total potassium, soil organic matter (organic carbon) (Qulin method), soil organic matter (organic carbon) (extraction method), pH, salinity, moisture content.

II. Testing Speed

Simultaneous extraction and determination of multiple nutrients in soil, including available N, P, and K, in a single step.

Testing Speed: Under normal operating conditions, testing for soil ammonium nitrogen, phosphorus, and potassium takes 20 minutes (including soil sample pretreatment and reagent preparation). Testing for a single trace element takes approximately 20 minutes.

III. Feature Overview

★1. Operating System: Android 5.1 operating system, quad-core processor, CPU clock speed ≥1.8 GHz, 16 GB of memory. Fast operation and high stability with no lag or system freezes. The manufacturer provides a software copyright certificate for the program.

2. 7.0-inch color LCD display (resolution: 1024×600), with backlight for easy visibility during field operations. Instrument external dimensions: 470×340×210 mm; instrument panel dimensions: 432×292 mm.

★3. Built-in bilingual (Chinese and English) display with one-touch switching for seamless operation.

★4. Dual protection via password and fingerprint login; multiple accounts can be configured as needed to ensure the security and classification of test data.

5. Dual protection via password and fingerprint login; multiple accounts can be configured as needed to ensure the security and classification of test data.

6. Built-in clock chip; automatically calibrates time when connected to Wi-Fi; displays the current year, month, day, hour, and minute to ensure traceability of test data.

★7. GPS positioning: Displays real-time satellite-based latitude and longitude to pinpoint the current testing location.

8. Data printing: Built-in thermal printer (no ribbon replacement required) prints test items, testing unit, tester, test time, channel number, absorbance, nutrient content (mg/kg), and QR codes.

★9. The instrument is equipped with dual USB ports for exporting historical test data. Data is presented in a table format when viewed on a computer.

★10. Supports Wi-Fi data upload; test results can be directly transmitted to a dedicated cloud-based agricultural data center. Enterprises are assigned exclusive accounts for this data center, where they can view data uploaded by different testers. Platform data can be directly exported to a computer in table format.

★11. Includes a WeChat mini-program for mobile devices to view all historically uploaded data.

12. The instrument includes a built-in diagnostic chart for common cash crops. In cases of deficiency or excess of any of the 9 elements, the chart details allow for intuitive diagnosis through leaf comparison.

13. All sample pretreatment and experimental procedures are built-in. Operators do not need to refer to the manual; they can follow the instrument’s prompts step by step, making it particularly suitable for beginners. A calibration function is integrated into the testing process, eliminating the need for manual calibration or power-on/off calibration, thereby ensuring testing accuracy.

★14. Includes independent sample processing instructional videos; simply click on the instrument’s main interface to watch, providing one-on-one guidance.

15. The instrument features a built-in soil testing and fertilization prescription system, allowing for direct calculation of fertilization prescriptions upon completion of testing. It also includes a standalone fertilization prescription calculation module. The instrument contains standard nutrient values for over 100 common cash crops and built-in fertilization correction coefficients, enabling the calculation of fertilization rates based on target yields to guide agricultural production. Soil testing and fertilization prescription results can be printed, with printouts including crop type, fertilizer type, target yield, total nutrient requirement, and recommended fertilization plan.

16. Dual AC/DC power supply; the instrument features a built-in high-capacity lithium battery capable of continuous operation for 10 hours on a full charge.

★17. External voltage display panel directly shows real-time measurement voltage, ensuring a stable testing environment and guaranteeing measurement accuracy; it also includes a power failure protection function that automatically saves data in the event of a sudden power outage to prevent data loss.

18. Four dedicated experimental light sources (red, blue, green, orange) with stable wavelengths, a lifespan of up to 100,000 hours, excellent reproducibility, and high accuracy.

★19. 4-channel fixed cuvette module (solid-state design). The cuvettes are integrated into the instrument, eliminating mechanical movement and wear. To ensure measurement accuracy, the channels must align with the light sources; there are exactly 4 detection channels.

★20. The cuvette chamber is built into a recessed, sealed compartment. A circular light-shielding plate with a diameter of 15.7 cm provides full coverage to prevent light leakage during experiments, which could affect detection accuracy, thereby ensuring accurate test results.

21. Designed with a high-strength PVC engineering plastic carrying case, it is sturdy, durable, and easy to carry, making it suitable for field testing.

★22. Patent No.: ZL 2022 2 0923165.6

IV. Instrument Specifications

1. Power Supply: AC 220±22V, DC 12V+5V (Instrument features a built-in 4800mAh high-capacity lithium battery)

2. Power Consumption: ≤5W

3. Measurement Range and Resolution: 0.001–9999

4. Repeatability Error: ≤0.03% (0.0003, potassium dichromate solution)

5. Instrument Stability: The instrument requires no warm-up time. Drift is less than 0.3% within one hour (0.003, transmittance measurement). The displayed value remains stable for one hour after startup (transmittance measurement); within two hours, the drift does not exceed 0.3% (transmittance measurement) or 0.001 (absorbance measurement);

6. Linearity error: ≤0.1% (0.001, copper sulfate detection)

7. Sensitivity: Red light ≥4.5 ×10⁻⁵; Blue light ≥3.17 ×10⁻³; Green light ≥2.35 ×10⁻³; Orange light ≥2.13 ×10⁻³

8. Red light: 680 ± 2 nm; Blue light: 420 ± 2 nm; Green light: 510 ± 2 nm; Orange light: 590 ± 4 nm

9. Display resolution: 1024 × 600

10. Instrument protection rating: IP65

11. pH (Acidity/Alkalinity): (1) Measurement range: 1–14 (2) Accuracy: 0.1 (3) Error: ±0.1

12. Salinity (Conductivity): (1) Measurement range: 0–9999 (ppm) (2) Error: ±2%

13. Soil Moisture Technical Parameters: Moisture unit: % (g/100g); Moisture content measurement range: 0–100%; error <0.5%

14. Soil N-P-K error ≤1%; organic matter error ≤2%

V. After-Sales Service

The instrument comes with a three-year warranty and lifetime free repair service (repairs are charged only at the cost of parts). We provide free shipping of the instrument and free training.

We offer lifetime free technical support for soil fertility and other agricultural-related matters!