OK-Q3S Microcomputer Soil (Fertilizer) Nutrient Rapid Tester

I. Performance Characteristics

1. Employs microprocessor technology, digital circuitry, programmed design, single-chip microcomputer control, touch-sensitive buttons, and LCD display.

2. Dual-purpose AC/DC (vehicle-mounted).

3. Uses a filter as the light source and silicon semiconductors as the signal receiving system, with a lifespan of up to 100,000 hours.

4. The dark box section adopts a multi-light source mechanism design, enabling the detection of multiple items.

5. Operational stability is 6 times better than the national standard JJG179-90, and repeatability meets the standards of grating spectrophotometers.

6. Features automatic temperature correction for available phosphorus testing.

7. Built-in thermal printer for storing and printing test results.

II. Test Items

1. Soil Nutrients: Available nitrogen, nitrate nitrogen, ammonium nitrogen, available phosphorus, available potassium, organic matter, total nitrogen, total phosphorus, total potassium, pH, etc.

2. Micronutrients: Boron, manganese, iron, copper, calcium, magnesium, sulfur, chlorine, zinc, silicon, etc.

3. Fertilizer Nutrients: Humic acid, organic matter, total nitrogen, total phosphorus, and total potassium.

4. Plant Nutrients: Nitrogen, phosphorus, and potassium in the plant.

III. Technical Parameters

1. Measurement Range and Resolution: 0.001～9999

2. Stability: Drift less than 0.003 within three minutes

3. Linearity Error: ±1.0%

4. Repeatability Error: Less than 0.005

5. 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

6. Wavelength Range: Red light: 680±2nm; Blue light: 420±2nm; Green light: 510±2nm; Orange light: 590±2nm

7. pH Value (Acidity/Alkalinity) Measurement Technical Parameters: A A. Testing Range: 1～14

B. Error: ±0.1

8. Power Supply: A. AC: 180V～240V, 50Hz; B. DC: 12V, 5W (vehicle-mounted)

9. Combined NPK Extraction: Simultaneous extraction of nitrogen, phosphorus, and potassium from soil can be completed in 3 minutes.

10. Testing Speed: Testing one soil sample (N, P, K) ≤30 minutes; testing 5 soil samples simultaneously ≤50 minutes.

11. Seismic Resistance: Qualified.

IV. Easy Operation

Complete Set: The rapid testing instrument integrates reagents, equipment, and instrumentation, making it easy to carry and equivalent to a small laboratory, facilitating on-site testing and mobile services. The pre-packaged reagents are ready to use, ensuring rapid testing. Low cost; the cost of testing one nutrient (N, P, K) is only 3 yuan.

V. Instrument Configuration

Instrument Case: Main unit, electronic balance, electrodes, cuvettes, power cord, etc. Medicine box: Erlenmeyer flasks, volumetric flasks, funnels, graduated cylinders, filter paper, aluminum boxes, wash bottles, and a set of medicines, etc.