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Handheld Tester
NiuBoL GT5 is a highly intelligent all-in-one soil nutrient rapid tester, integrating soil, fertilizer, plant, and food safety testing functions. It adopts Android operating system and precision rotating colorimetric cell technology, widely used in agricultural research, fertilizer production, and large-scale planting, providing precise fertilizer recommendation systems.
Tel/WhatsApp:+8615367865107
Email:Arvin@niubol.com +Nearly 100 partner companies in more than 68 countries. We are committed to providing high-quality, practical products to meet your needs and help you solve problems. Our products comply with international standards and are certified with ISO, CE and RoHS.Product Details
In the wave of precision agriculture and scientific fertilization, data accuracy is the core of agricultural decision-making. The GT5 high-intelligent soil nutrient tester, meticulously developed by NiuBoL, is not just a testing device but a portable "miniature laboratory." It perfectly solves the problems of long testing cycles, high costs, and complex operations in traditional laboratories, providing efficient, precise, and convenient on-site testing solutions for agricultural service departments, fertilizer distributors, and large planting bases.

1. Broad-Spectrum Soil Nutrient Analysis
GT5 enables multi-dimensional component analysis of soil, ensuring agricultural producers grasp first-hand soil fertility information:
Basic Fertility: Soil ammonium nitrogen, nitrate nitrogen, available phosphorus, available potassium, organic matter, total nitrogen, total phosphorus, total potassium.
Medium and Trace Elements: Calcium, magnesium, sulfur, silicon, boron, iron, copper, manganese, zinc, chlorine, molybdenum, etc.
Physical and Chemical Indicators: pH value (acidity and alkalinity), salinity (conductivity), moisture content, carbon-nitrogen ratio.
Environmental Safety Testing: Monitoring of soil heavy metals such as lead, chromium, nickel, aluminum, fluorine, titanium, selenium.
2. Fertilizer Quality Authenticity Identification
In response to the uneven quality of fertilizers on the market, GT5 provides comprehensive fertilizer nutrient composition analysis, covering:
Single-Element Fertilizers: Nitrogen fertilizers (urea, biuret), phosphate fertilizers, potash fertilizers.
Compound/Organic Fertilizers: Total nitrogen, total phosphorus, total potassium, acid-soluble nitrogen, humic acid content.
Foliar/Water-Soluble Fertilizers: Professional nutrient determination for high-concentration water-soluble fertilizers.
3. Plant and Food Safety Monitoring
Crop Nutrient Diagnosis: Real-time monitoring of nitrogen, phosphorus, potassium, and trace elements in fresh crops and dried plants, preventing nutrient deficiency symptoms.
Food Safety Preliminary Screening: Rapid detection of nitrate, nitrite, and heavy metal residues in fruits and vegetables, safeguarding table safety.

Hardware Platform
GT5 is equipped with a high-performance ARM Cortex-A7 architecture and RK3288 quad-core processor, with a main frequency up to 1.88GHz. Compared with traditional microcontroller instruments, its data processing speed is improved several times, running Android system smoothly and stably, ensuring no crashes under high-frequency testing.
Patented Rotating Colorimetric Technology
The instrument adopts independently developed precision rotating colorimetric cell design. This design avoids optical path errors caused by traditional manual cuvette replacement, ensuring consistency of light sources across 8 detection channels. Precise optical path positioning effectively shields external light interference, achieving repeatability comparable to grating spectrophotometers.
High-Precision Filter Analysis
Integrated with high-precision filter technology analysis method, paired with professional cold light sources in red, blue, green, and orange wavelengths. Light source lifespan reaches 100,000 hours with extremely high temperature stability, solving the disadvantages of traditional bulb light sources such as easy heating and drift.

Mobile Laboratory-Level Kit
GT5 integrates reagents, utensils, and instrument into one. Its high-strength PVC engineering plastic carrying case design is shock-resistant and drop-proof, achieving open-and-test functionality. Users do not need additional experimental accessories and can work in the field directly.
Intelligent Auxiliary System
Expert Fertilization System: Built-in expert fertilization database for more than 100 common crops and fruit trees. Based on detected soil nutrient content, the system can automatically calculate recommended fertilization schemes for target yields and output directly through thermal printer, achieving integrated "testing, formulation, and application."
Nutrient Deficiency Diagnostic Atlas: Built-in high-definition crop deficiency images. By comparing on-site crop leaf performance, technicians can quickly and intuitively judge nutrient abundance.
Built-in Instructional Videos: The instrument integrates operational videos for sample pretreatment and testing steps. Even operators with zero foundation can quickly master professional testing techniques by watching the videos.
| Indicator Item | Technical Specification & Performance |
|---|---|
| Processor and System | ARM Cortex-A7, RK3288 Quad-Core; Android Intelligent System |
| Display Resolution | 7-inch True Color Touch Screen (1024*600) |
| Repeatability Error | ≤0.02% (0.0002, Potassium Dichromate Solution) |
| Linearity Error | ≤0.1% (0.001, Copper Sulfate Detection) |
| Detection Channels | 8 Rotating Detection Channels |
| Wavelength Accuracy | Red (680±2nm), Blue (420±2nm), Green (510±2nm), Orange (590±4nm) |
| pH Value Range | 1–14; Accuracy: 0.01; Error: ±0.1 |
| Salinity/Moisture Error | Relative Error ±5%; Moisture Error<0.5% |
| Battery Life and Protection | Lithium Battery Continuous Operation >10 Hours; IP65 Shockproof Level |
| Communication Interfaces | USB, Ethernet Interface; Supports U Disk Data Export |
Detection Efficiency Advantages
GT5 shows particularly obvious advantages during busy agricultural seasons. Its synchronous extraction technology supports simultaneous processing of multiple samples:
Soil N/P/K: 1 sample only takes 20 minutes; 8 samples simultaneous detection only takes 1 hour.
Fertilizer N/P/K: 3 samples simultaneous determination can be completed within 1.5 hours.
This extremely high turnover speed greatly improves the reception capacity of agricultural material service stations.

Q1: Can the detection accuracy of GT5 reach laboratory standards?
Yes. The original intention of GT5 design is to miniaturize laboratory precision. Its linearity error is controlled within 0.1%, with stability far exceeding national standards. Through built-in automatic calibration function and precision rotating colorimetric cell, it effectively eliminates human operation interference, and detection results can fully serve as the basis for scientific fertilization and fertilizer quality evaluation.
Q2: Is the chemical pretreatment process difficult for beginners?
No need to worry at all. NiuBoL has built-in complete operation instructional videos in the system, from soil sample collection, weighing, extraction, filtration to color development and comparison, with demonstrations for every step. In addition, the randomly provided finished reagents are ready to use without complicated secondary configuration.
Q3: Which crops does the instrument's expert fertilization system support?
The system has built-in databases for more than 100 crops covering grain crops (rice, wheat, corn), cash crops (tobacco, cotton), fruit trees, and vegetables. You can input detection values according to expected target yield (such as 1000 jin per mu), and the system will automatically generate formula recommendations including specific nitrogen, phosphorus, and potassium amounts.
Q4: How are detection data saved and transmitted?
GT5 has large-capacity built-in storage and comes with USB interface. You can directly print receipts on-site through the built-in thermal printer, or use U disk to export historical data to computer for archiving. At the same time, it supports Ethernet connection with good scalability.
Q5: Is the battery durable? Does it support car charging?
The instrument has built-in large-capacity lithium battery, capable of continuous uninterrupted operation for more than 10 hours after full charge. It supports dual modes of AC 220V AC power and DC 12V DC power, can be charged through car power, very suitable for field mobile testing in remote areas.

| Instrument Box | Medicine Box | ||||
|---|---|---|---|---|---|
| Serial number | Name | Quantity | Serial number | Name | Quantity |
| 1 | Instrument | 1 Unit | 1 | Medicine box | 1 Unit |
| 2 | PH meter | 1 Pcs | 2 | NPK organic reagent | 1 Set |
| 3 | TDS meter | 1 Pcs | 3 | Qualitative filter paper | 1 Box |
| 4 | Electronic scale (100g/0.01g) | 1 Unit | 4 | Cuvette | 10 Box |
| 5 | Aluminum box | 1 Pcs | 5 | Glass test tube | 12 Pcs |
| 6 | Ear cleaning bulb | 1 Pcs | 6 | Plastic test tube | 20 Pcs |
| 7 | Glass stirring rod | 1 Pcs | 7 | 100ml triangular flask | 2 Pcs |
| 8 | Glass pipette 1ml | 1 Pcs | 8 | Reagent bottle | 1 Pcs |
| 9 | Glass pipette 2ml | 1 Pcs | 9 | 50ml measuring cylinder | 1 Pcs |
| 10 | Glass pipette 5ml | 1 Pcs | 10 | Plastic dropper | 12 Pcs |
| 11 | Glass pipette 10ml | 1 Pcs | 11 | Test tube rack | 1 Pcs |
| 12 | Printing paper | 1 Pcs | 12 | Test tube brush | 1 Pcs |
| 13 | Instruction manual | 1 Pcs | 13 | Washing bottle | 1 Pcs |
| 14 | Certificate of conformity/warranty card | 1 Pcs | 14 | Weighing spoon | 1 Set |
| 15 | Power adapter | 1 Unit | 15 | Power adapter | 1 Unit |
As an industry-leading brand, NiuBoL has always been committed to innovation in agricultural sensing and detection technology. The GT5 high-intelligent all-project soil fertilizer nutrient tester, with its excellent precision, comprehensive project coverage, and ultimate user experience, has become an indispensable tool in agricultural research, agricultural material trade, and precision planting fields.
We sincerely invite distributors and project partners from all over to join. With multiple intellectual property rights, national-level institutional appraisals, and lifelong technical support, NiuBoL will provide you with the most solid product backing, jointly promoting the leapfrog development of Chinese agriculture from empirical fertilization to digital fertilization.
Do you need customized exclusive technical solutions for specific crops or project bidding requirements? We can provide you with more detailed quotations and configuration lists.
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