What is a UV Accelerated Weathering Tester and Why Does It Matter?
A UV Accelerated Weathering Tester is a specialized device designed to simulate harsh outdoor conditions like ultraviolet (UV) light, heat, and moisture in a controlled lab environment. Its main purpose is to predict how materials such as plastics, coatings, textiles, and automotive interiors will degrade over time. Think of it as a fast-forward button for natural aging—revealing effects like cracking, fading, chalking, and loss of strength in weeks or months instead of years.
| Key Functions | Why It Matters |
|---|---|
| Simulates UV exposure (UVA-340) | Mimics sunlight to test real-world wear |
| Controls heat and condensation | Replicates outdoor temperature and moisture |
| Accelerates aging processes | Speeds up product development cycles |
| Predicts long-term degradation | Helps avoid unexpected field failures |
| Ensures compliance with standards | Meets ASTM G154, ISO 4892 requirements |
Benefits at a glance:
- Speeds up R&D: Quickly refine materials and coatings without waiting years for outdoor results.
- Ensures Regulatory Compliance: Validate product durability upfront to meet ASTM and ISO UV aging test standards.
- Reduces Field Failures: Identify weaknesses early to improve product lifespan and customer satisfaction.
By using a UV accelerated weathering tester, manufacturers gain confidence in their product’s long-term durability while saving time and money during development and quality assurance. It’s a must-have for anyone serious about UV resistance testing.
Key Features of the Derui UV Weathering Tester
The Derui UV Accelerated Weathering Tester is built to give reliable, consistent results, so you can trust your testing every time. Here are its main features:
| Feature | Description |
|---|---|
| UVA-340 Lamp Technology | Uses UVA-340 fluorescent lamps that closely mimic natural sunlight’s UV spectrum, especially important for accurate outdoor exposure simulation. |
| Cycle Automation | Fully programmable test cycles that include UV exposure, condensation, and spray phases to replicate real-world weather conditions with minimal manual input. |
| Safety Interlocks | Built-in safety features prevent access during operation, ensuring a secure testing environment for your team. |
| Feature Icons with Alt-Text | Clear, easy-to-understand icons with SEO-friendly alt-text for better online visibility and quick functionality recognition. |
These features make the Derui UV weathering tester easy to use while closely simulating real environmental effects like fading, cracking, and degradation. Whether you’re developing new coatings or testing automotive interior UV resistance, these updates matter.
Advanced Environmental Controls
Our Derui UV accelerated weathering tester offers precise control over temperature and humidity to match real-world conditions accurately. This means you can simulate how materials hold up under specific climates, whether it’s hot and dry or humid and wet.
The irradiance calibration is another key feature. It ensures the UV light intensity stays consistent throughout testing. This steady UV exposure replicates natural sunlight closely, making your results reliable and repeatable.
Control parameters are designed to reflect real environmental cycles, including the right balance of UV, heat, and moisture. This gives you a true-to-life accelerated aging test, helping predict product durability before hitting the market.
Technical Specifications: Derui UV Accelerated Weathering Tester Models

We offer two main models of the Derui UV Accelerated Weathering Tester to fit different testing needs: Benchtop and Full-Size. Each model comes with customizable options to suit your lab or production environment.
| Feature | Benchtop Model | Full-Size Model |
|---|---|---|
| Chamber Size | 450 x 500 x 600 mm | 850 x 950 x 1400 mm |
| Lamp Type | UVA-340 Fluorescent UV lamp | UVA-340 Fluorescent UV lamp |
| Temperature Range | 25°C to 70°C | 25°C to 80°C |
| Humidity Control | 50% to 95% RH | 50% to 95% RH |
| Programmable Cycles | UV, condensation, water spray | UV, condensation, water spray |
| Irradiance Range | 0.35 – 0.70 W/m²/nm | 0.35 – 0.70 W/m²/nm |
| Control Interface | Touchscreen panel | Touchscreen panel |
| Safety Features | Auto shutoff, door interlock | Auto shutoff, door interlock |
| Power Supply | 110V / 220V, 60Hz | 110V / 220V, 60Hz |
Customizable Options
Expand your tester’s capabilities with add-ons:
- Extended lamp lifetime packs
- Additional temperature sensors
- Data logging and export modules
- Remote monitoring compatibility
Schema Markup for Product Specs
Our product details support schema markup, so your system or website can easily pull and display verified specs for:
- Model numbers
- Key features
- Operating parameters
This ensures clear, accurate info for your compliance documentation or customer reference.
Whether you choose the compact benchtop unit for smaller batches or the full-size model for high-volume testing, Derui’s UV Accelerated Weathering Tester delivers reliability and precision to meet ASTM G154 and ISO 4892 standards.
How the Derui UV Tester Works: A Step-by-Step Breakdown

Using the Derui UV accelerated weathering tester is straightforward, designed to fit into your testing workflow without hassle. Here’s how it works:
1. Setup Procedures and Sample Placement
- Open the chamber and place your material samples on the designated racks or trays.
- Make sure samples are spaced evenly for uniform UV exposure.
- Close the door securely—the tester has safety interlocks to prevent operation if not sealed properly.
2. Programming Exposure Cycles (UV, Moisture, Spray)
- Use the easy-to-navigate control panel to set your test cycles.
- You can program UV light exposure using the UVA-340 lamps, alternating with moisture or condensation cycles to mimic outdoor weather.
- Choose spray or humidity cycles to simulate rain or dew, based on ASTM G154 or ISO 4892 standards.
- Customize cycle duration, temperature, irradiance, and humidity to match your product’s real-world conditions.
3. Exposure Monitoring and Data Logging
- The tester continuously monitors irradiance and temperature for precise control.
- All data is logged automatically, allowing you to track performance trends and generate reports easily.
- You can export logs for compliance documentation or R&D analysis.
4. Typical Test Duration and Equivalencies
- Tests usually run from several days up to weeks, depending on your specific standards or product needs.
- The UV accelerated weathering tester simulates months or years of outdoor exposure in a fraction of the time.
- This accelerates decision-making and helps spot potential failures early, saving time and costs for your team.
With the Derui UV weathering tester, you get reliable, repeatable results that reflect real-world wear — all while speeding up your product development and compliance testing.
Applications Across Industries
The Derui UV Accelerated Weathering Tester plays a crucial role in multiple industries across the United States, helping manufacturers deliver durable, high-quality products.
Automotive Testing
We use ISO 4892 standards to test automotive interiors, ensuring materials like plastics and fabrics inside cars withstand UV exposure. This means dashboards, door panels, and seats maintain their look and strength, even under strong sunlight.
Coatings and Plastics
For exterior parts and coatings, compliance with ASTM G154 is key. Our UV tester speeds up the aging process, revealing how paints, varnishes, and plastic components resist cracking, fading, or chalking—helping manufacturers make longer-lasting products.
Textiles and Polymers
Textile producers rely on our equipment to check UV colorfastness and material durability, following AATCC TM16 standards. This is vital for outdoor fabrics, sportswear, and upholstery that need to keep their color and integrity over time.
Proven Results
Our clients have documented clear improvements using the Derui UV Weathering Tester. From reduced field failures and improved material formulas to faster compliance certification, it’s a powerful tool that cuts R&D time while boosting quality.
By covering these different sectors, our UV aging test chamber helps American businesses stay competitive and compliant with global standards while cutting costs on warranty claims and returns.
Compliance with Global Standards: ASTM G154, ISO 4892, and More
When it comes to UV accelerated weathering testing, following global standards like ASTM G154 and ISO 4892 is crucial. These standards set clear cycle requirements to simulate real-world outdoor exposure through controlled UV light, temperature, and moisture conditions.
Cycle Requirements Explained
- ASTM G154 focuses on fluorescent UV lamp cycles, specifying exposure times for UV light and condensation to mimic day/night weathering.
- ISO 4892 covers a broader range of UV exposure methods, including UVA and Xenon arc lamps, with cycles tailored to different materials and climates.
- These cycles help ensure your tests predict how products will hold up over time under sunlight and weather stress.
Reporting and Documentation Best Practices
- Keep detailed records of test parameters like lamp intensity, temperature, humidity, and cycle duration.
- Include before-and-after photos, test start and end dates, and any material changes observed.
- Use standardized reporting formats to make your results clear and compliant with client or regulatory demands.
Downloadable Standards Checklist
To make compliance easier, we offer a downloadable checklist summarizing key requirements for ASTM G154, ISO 4892, and other relevant UV weathering standards. It’s a handy tool to confirm your testing stays on track and meets industry expectations.
This focus on compliance ensures your products not only survive lab testing but prove their durability in real-world conditions—giving you confidence and your customers peace of mind.
Derui vs. Competitors: Why Our UV Weathering Tester Stands Out

When choosing a UV accelerated weathering tester, it’s important to compare key features like price, lamp life, and customer support. Here’s a quick look at where Derui shines against other brands:
| Feature | Derui UV Weathering Tester | Competitors |
|---|---|---|
| Price | Affordable, great value | Often higher, less flexible |
| Lamp Life | Long-lasting UVA-340 lamps | Shorter lamp replacement cycles |
| Support | Local US-based, fast response | Limited or overseas support |
| Customization | Multiple models & options | Standard, less adaptable |
| Compliance | Meets ASTM G154 & ISO 4892 | Varies by model |
Why Choose Derui?
- Affordable pricing without sacrificing quality.
- Customizable testers for benchtop or full-size needs.
- Local customer support in the US ensures quick help.
- Reliable UVA-340 lamp technology for realistic UV simulation.
- Easy-to-use controls and precise environmental settings.
If you want a dependable UV weathering tester that balances cost, quality, and service, Derui is the smart choice.
Installation, Maintenance, and Best Practices

Site Requirements for Installation
To get the most out of your UV accelerated weathering tester, pick a clean, dry area with stable temperature and good ventilation. Make sure there’s enough space around the unit—for easy access during tests and maintenance. A dedicated power supply meeting the tester’s specs is essential to avoid disruptions. Avoid placing the tester near strong vibrations or direct sunlight to ensure accurate UV aging test results.
Regular Calibration Tips and Schedules
Keep your UV weathering tester reliable with routine calibration. We recommend calibrating irradiance and temperature sensors every 6 months or after lamp changes. Using a calibrated radiometer ensures your UVA-340 lamp mimics real sunlight precisely. Document calibration results for consistent ASTM G154 and ISO 4892 compliance. A simple schedule:
- Check lamp intensity monthly
- Perform full calibration biannually
- Replace lamps every 1,200–2,000 hours depending on usage
Setup Tutorials and Troubleshooting Videos
New to UV accelerated weathering testers? We offer clear, step-by-step video guides to help you:
- Install and set up your unit correctly
- Program exposure cycles to match ASTM or ISO standards
- Handle common issues like uneven aging or humidity control errors
Our hands-on tutorials help reduce downtime and keep your testing smooth, making this an ideal resource for both beginners and experienced users.
Following these best practices ensures your Derui UV weathering tester delivers accurate, repeatable results every time.
Frequently Asked Questions (FAQs)
Here are quick answers to common questions about our UV accelerated weathering tester and related topics.
What’s the difference between UVA and UVB lamps?
| Feature | UVA Lamps | UVB Lamps |
|---|---|---|
| Wavelength Range | 320-400 nm (UVA-340) | 280-320 nm |
| Purpose | Best for simulating sunlight, especially for outdoor exposure | Stronger, used more for medical or specialized testing |
| Common Use | Standard in ASTM G154 and ISO 4892 testing | Less common in weathering testers |
| Impact on Samples | Causes fading, cracking, and degradation like natural sunlight | Can cause deeper material changes, often harsher |
In our UV weathering tester, we use UVA-340 lamps to closely mimic real sunlight for accurate, reliable results.
What about cost and financing options?
- Affordable Pricing: Our testers are priced competitively in the US market without sacrificing performance.
- Financing Plans: Flexible payment terms available to fit your research budget.
- Maintenance and Parts: Low-cost replacements and long lamp life keep long-term expenses down.
Common operation questions in brief:
| Question | Answer |
|---|---|
| How long does a test cycle last? | Usually 500-1000 hours, depending on material and standard. |
| Can I control humidity and temperature? | Yes, precise controls simulate real-world conditions. |
| Is the tester easy to maintain? | Yes, with simple calibration and cleaning guides. |
| What sample sizes fit inside? | Benchtop and full-size models available for various needs. |
| Do you provide training? | Yes, we offer setup tutorials and troubleshooting videos. |
If you have more questions, reach out to us for fast support and detailed answers.
Ready to Enhance Your Testing? Contact Derui Today
If you’re looking to improve your material durability testing and speed up product development, our UV Accelerated Weathering Tester is the smart choice. Derui offers reliable, easy-to-use equipment that meets ASTM G154 and ISO 4892 standards, perfect for automotive, coatings, textiles, and more.
Why Choose Derui?
- Accurate simulation with UVA-340 lamps for true-to-life sunlight exposure
- Flexible models: benchtop for tight labs, full-size for bigger needs
- Easy automation with precise temperature, humidity, and irradiance controls
- Strong local U.S. support and competitive pricing
- Customizable setups to fit your industry requirements
Next Steps:
- Request a free quote tailored to your testing needs
- Schedule a demo to see the Derui UV Weathering Tester in action
- Subscribe to our newsletter for updates on testing tips and new products
Need more? Check out our range of related equipment, including QUV weathering testers and condensation humidity testers, designed to cover every aspect of your accelerated UV exposure testing.
Contact Derui today and get your testing on track with confidence!














