Our Location
Room 503, block 1, Juzili Building, Sandun Town, Hangzhou City, Zhejiang Province. China.
Achieve Unrivalled Precision in Material Resistivity Measurement with Automated, Intelligent, and Customizable Testing.
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Engineered for Accuracy, Designed for Innovation
The SZT-2C Four-Probe Resistance Tester is the definitive tool for researchers, engineers, and QC managers who cannot afford to compromise on measurement accuracy. Designed to eliminate contact resistance errors and provide highly repeatable data, this instrument is the bedrock for developing next-generation materials and semiconductors. Move beyond the limitations of standard testers and unlock true insight into your material’s electrical properties.
Key Advantages at a Glance:
Bespoke Probe Customisation: We offer a unique service to develop the perfect custom probe for your specific material and application.
Ultra-High Measurement Accuracy: Total measurement uncertainty of ≤2% for reliable, standards-compliant data.
Intelligent Sample Protection: An automated sensing system slows the probe’s descent, preventing damage to valuable wafers and delicate thin films.
Fully Automated Workflow: Connect to a PC for one-click automated testing with intelligent range selection and result calculation.
Engineered for Accuracy, Designed for Innovation
The SZT-2C is engineered to deliver scientifically rigorous data without complex manual calculations. Its core design focuses on eliminating familiar sources of error and ensuring longevity.
- Eliminate Contact Resistance Errors: The four-probe method is inherently designed to bypass contact and wire resistance, providing an accurate measurement of the material’s bulk or sheet resistivity.
- Precision Tungsten Carbide Probes: High-quality tungsten carbide probes ensure exceptional durability, minimal wear, and consistent, low-resistance contact for thousands of accurate measurements.
- Advanced Correction Algorithms: Integrated software automatically performs temperature, thickness, and voltage/current corrections, delivering purified data ready for analysis.
Key Features & Benefits
| Feature | Benefit |
|---|---|
| Wide Measurement Range | The integrated software automatically performs temperature, thickness, and voltage/current corrections, delivering scientifically rigorous data without the need for complex manual calculations. |
| High-Quality Tungsten Carbide Probes | Ensures exceptional durability, minimal wear, and consistent, low-resistance contact for thousands of accurate measurements, reducing replacement costs and downtime. |
| Advanced Correction Algorithms | The standard large platform accommodates a wide variety of sample sizes, with the option for full customisation to fit non-standard shapes or production fixtures. |
| Integrated Manual & Automatic Modes | Seamlessly switch between hands-on manual control for R&D and fully automated sequences for production testing, providing ultimate operational flexibility. |
| Intuitive Color LCD & Software | A clear digital display and user-friendly PC software simplify operation, reduce the learning curve, and make data logging and analysis effortless. |
| Oversized & Customizable Test Stage | The standard large platform accommodates a wide variety of sample sizes, with the option for full customization to fit non-standard shapes or production fixtures. |
Our Unique Custom Probe Solution: A Perfect Fit for Your Application
“We test your samples first to develop the perfect custom probe for your application.”
Standard solutions yield standard results. For cutting-edge research, you need a tool tailored to your unique challenges. At QSNTech, we go beyond selling a product; we provide a complete measurement solution. Our expert engineering team will analyze your material samples to design and manufacture a custom four-point probe head—optimizing probe spacing, pressure, and material—to guarantee the most accurate and repeatable results possible.
The Process:
- Consultation: We discuss your material type, sample geometry, and measurement goals.
- Sample Analysis: You send us your material samples for in-house testing and characterisation.
- Custom Design: Our engineers design the ideal probe configuration based on empirical data.
- Manufacturing & Delivery: We manufacture your custom probe and deliver it with your SZT-2C tester.
Ready to get the most accurate data from your unique materials?
Start Your Custom Probe Consultation
sales@testleadsworld.com or Whatsapp: 0086 13906512387
Intuitive Software & Automated Workflow
Streamline your testing process from setup to analysis. Connect the SZT-2C to a PC for one-click automated testing. The user-friendly software intelligently selects the optimal measurement range and calculates results, boosting lab efficiency and reducing the potential for human error.
- One-Click Automated Testing
- Intelligent Measurement Range Selection
- Effortless Data Logging, Export, and Analysis
- Compatible with Windows 7, 10, & 11
Technical Specifications
| Parameter | Specification |
|---|---|
| Measurement Function | Resistivity, Sheet Resistance (Square Resistance), Resistance |
| Resistivity Range | 10⁻⁵ ~ 10⁵ Ω·cm |
| Sheet Resistance Range | 10⁻⁴ ~ 10⁶ Ω/□ |
| Resistance Range | 10⁻⁵ ~ 10⁵ Ω |
| Constant Current Source | DC 0.1μA ~ 100mA (Continuously Adjustable Ranges) |
| Current Accuracy | ±0.5% of reading ±1 digit |
| Digital Voltmeter Range | 0 ~ 199.99 mV |
| Voltage Accuracy | ±0.1% |
| Display | 4 ½ Digit Digital Color LCD |
| Probe Spacing | Standard: 1mm ± 0.01mm (Customizable spacing available) |
| Probe Material | Tungsten Carbide |
| Probe Mechanical Wander Rate | ≤0.3% |
| Communication Interface | USB (Includes data acquisition software) |
| Power Supply | 220V ±10%, 50/60Hz |
| Certifications | CE, RoHS Compliant |
| Measurement range | Constant current source | ||
| Resistivity | 10-5 to 105 Ω·cm | Current output | DC current 0~100mA, with continuous adjustable digital settings for each range. Voltage meter range and display format: 000.00 – 199.99 mV. |
| Square resistance | 10-4 ~ 106Ω/□ | Range | 10, 100μA, 1, 10, 100mA |
| Resistance | 10-5 ~ 105Ω | Error range | ±0.5% of reading ±1 digit |
| Input impedance: >1000MΩ; Accuracy: ±0.1%. | |||
| Measureable semiconductor material size | Four-probe test probe | ||
| Diameter: | 5mm-250mm | Probe spacing: | 1mm±0.01mm |
| Length: | Any length is available (requires a manual probe) | Material: | Tungsten carbide.Probe mechanical wander rate:≤0.3% |
| Measurement method | Display | ||
| Axial, cross-sectional can be | 4 1/2, digital display, polarity, overload auto-show, | ||
| Power supply | 220±10% 50Hz or 60Hz Power consumption:< 35W | The device’s maximum relative error (using a silicon standard sample from 0.01-180Ω·cm) is up to ±5%. | |
| Computer communication interface: USB, high-speed parallel data acquisition. Data collection time to the computer is only 1.5 seconds when connected to a computer (in 0.1mA, 1mA, 10mA, 100mA range). When connected to a computer, it comes with an automatic measurement function and automatically selects the suitable test current range for the sample. | |||
Applications & Package Contents
| Ideal Applications | What’s Included in the Box |
|---|---|
| – Semiconductor Materials (Si, Ge, GaAs) | – SZT-2C Main Measurement Unit |
| – Conductive Thin Films (ITO, FTO, AZO) | – Four-Point Probe Head (Standard or Custom) |
| – Solar Cells & Photovoltaics | – Test Platform/Stand |
| – Battery & Electrode Materials | – Data Acquisition Software (CD/USB Drive) |
| – Graphene & 2D Materials | – USB Communication Cable |
| – OLED & Display Technologies | – Power Cord |
| – Conductive Polymers & Plastics | – User Manual & Calibration Certificate |
| – University & Institutional Research Labs |
Why Choose QSNTech?
- Expertise & Experience: With over 20 years in the precision measurement industry, we possess the deep technical knowledge to solve your most complex connection and testing challenges.
- Uncompromising Quality: Every SZT-2C tester undergoes 100% inspection and calibration before shipment. CE certifications validate our commitment to quality.
- Authoritative Manufacturing: As the direct manufacturer, we control the entire process, ensuring superior consistency and performance. This allows us to offer unique services, such as custom probe development.
- Trust & Partnership: Our dedicated engineering team provides expert advice and ongoing support. Universities and high-tech companies trust us in over 50 countries.
Frequently Asked Questions (FAQ)
Q1. How do I ensure the tester is calibrated?
Each unit is factory-calibrated before shipment. Users may perform routine verification with standard resistivity silicon wafers (available at additional cost). Domestic customers can request calibration services, while international customers receive instructional calibration videos for easy self-check.
Q2. What is the difference between this and the Van der Pauw method?
The four-point probe method is ideal for uniform, flat samples and provides fast, standardised sheet resistance measurement. The Van der Pauw method supports irregular shapes and offers more flexibility, but requires a more complex setup. The SZT-2C delivers direct, efficient measurements suitable for production and R&D applications.
Q3. Is the software compatible with Windows 11?
Yes. Our data acquisition software supports Windows 7, Windows 10, and Windows 11.
Q4. Can the probe pressure be adjusted?
No manual adjustment is needed. The fully automatic test fixture intelligently controls probe pressure based on the material hardness, preventing damage and ensuring measurement stability.
Q5. What is the typical lead time for a custom probe?
Custom probe production typically requires 2–3 weeks after sample evaluation. Please get in touch with our engineering team for an exact schedule tailored to your application
Ready to Elevate Your Measurement Accuracy?
Take the next step towards more reliable and insightful material characterisation. Whether you need a standard SZT-2C or a fully customised testing solution, our team is ready to assist you.
Have a technical question or need a custom solution? Contact our expert, Betty Wang, directly for a swift and knowledgeable response:
Email: sales@testleadsworld.com
Phone/WhatsApp: +86 13906512387
Alternatively, request a formal quote by completing the form below.
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