Soil nutrient tester

Features of soil nutrient tester:

1. “Chassis/agent integrated aluminum alloy chassis” design, easy to carry, durable, and equipped with finished medicines.

2. Microcomputer control, digital circuit, program design, LCD display, AC and DC dual-use, field flow test, minimize operator errors and labor intensity.

3. Resolution: 0.001, touch button, built-in thermal printer, can print test results.

4. It can detect the available nitrogen, available phosphorus, available potassium, total nitrogen, total phosphorus, total potassium, organic matter content in soil and fertilizers, organic fertilizers, plants, soil pH, salt content, and soil calcium, magnesium, sulfur, boron, chlorine, silicon and other 6 trace elements.

5. High-brightness LED lamp is used as the light source, and silicon semiconductor is used as the signal receiving system, with a life of up to 100,000 hours. The light source is stable and the consistency is good.

6. The colorimetric tank adopts a single-channel, dual-light path design, without mechanical displacement and wear, and the optical path test positioning is accurate to ensure the accuracy of the measurement results.

Ⅰ.Test items:

Soil nutrients: ● Ammonium nitrogen, available phosphorus, available potassium, water, organic matter, pH, and various trace elements such as calcium, magnesium, sulfur, boron, chlorine, silicon, etc.;

Fertilizer nutrients: ● Nitrogen, phosphorus, and potassium in single fertilizers; ● Ammonium nitrogen, phosphorus, and potassium in compound (mixed) fertilizers and urea; ● Available nitrogen, available phosphorus, available potassium, total nitrogen, total phosphorus, total potassium, pH, organic matter, etc. in organic fertilizers.

II. Instrument technical indicators:

1. Power supply: AC: 180V~240V, 50 Hz; DC: 12V+5V (can be connected to vehicle power supply)

2. Range and resolution: 0.001-9999

3. Stability: drift less than 0.003 within three minutes

4. Linear error: ≤3% (0.03, copper sulfate detection)

5. Repeatability error: ≤0.5% (0.005, potassium dichromate solution)

6. Sensitivity: red light ≥4.5 ×10-5 blue light ≥3.17×10-3

7. Wavelength range: red light 620±8nm blue light 440±8nm

8. Soil moisture technical parameters Moisture unit: ﹪ (g/100g) Moisture content test range: 0-100﹪ Accuracy: ±0.5﹪

9. One-time simultaneous extraction and determination of the three nutrients N, P, and K in the soil, and scientifically recommended fertilizer application

10. Simultaneous, rapid, and accurate detection of nutrients such as nitrogen (N), phosphorus (P), and potassium (K) in fertilizers

11. Test speed: ≤30 minutes for testing one soil sample (N, P, K) (including pre-processing time)

12. 8 soil samples can be tested simultaneously for ≤1 hour (including pre-processing time)

13. Data printing: built-in high-end one-button thermal printer (patent number: ZL 2018 2 1777724.7)

III. Test speed:

8 samples can be tested simultaneously;

≤30 minutes for testing one soil sample (N, P, K), ≤40 minutes for testing three soil samples (N, P, K) at the same time;

≤50 minutes for testing one fertilizer (N, P, K), ≤1.5 hours for testing three soil samples (N, P, K) at the same time.

IV. Features of the product instrument:

Complete supporting equipment: The instrument integrates medicine, equipment and instrument into one, which is easy to carry and equivalent to a small laboratory. It is suitable for agricultural service departments or agricultural material dealers and fertilizer manufacturers to test soil and fertilizer and identify the authenticity of fertilizers.

Easy to operate and fast, the finished medicine can be used immediately after opening the bottle without configuration.

Reliable performance: The working stability is 6 times better than the national standard JJG179-90 index, and the repeatability reaches the index level of grating spectrophotometer.