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Water-Cooled Light Weather Fastness Tester: Benefits, Applications, and Buying Guide April 27 , 2026

Water-Cooled Light Weather Fastness Tester:

Benefits, Applications, and Buying Guide

When it comes to material weatherability and light fastness evaluation, one key piece of testing equipment you cannot overlook is the water cooled light fastness tester. An inappropriate tester may lead to unstable test data, low efficiency, or failure to meet standard requirements. But a reliable water-cooled light weather fastness tester supports accurate sunlight simulation, complies with multiple global standards, and helps assess material durability effectively.

What is the Water-cooled Xenon Arc Tester

Water-cooled Xenon Arc Tester through simulate illumination, exposed to the rain, mist spraying, alternating light and dark, temperature and humidity climates conditions to test material products’ color fading, aging, transmittance, peeling, hardness, softness and other performance changes.

This Xenon Weatherometer is widely applied to test rubber, plastic, coating, petrochemical products, automotive parts, textiles, and many other non-metallic materials.

Key Features of Water-Cooled Light Weather Fastness Tester GT-3000

Xenon Weathering Test Chamber: Presetting various specifications, or customized programs, meet diverse range of standards, including AATCC, ISO, BS, JIS etc.
6000W water-cooled xenon arc lamp system, accurately simulate sunlight spectrum. Irradiance auto- compensates system, control irradiance, temperature, and humidity timely through a closed loop.
Xenon Arc Test Chambers: Irradiation control, light irradiance sensor monitor, digital setting, automatic compensating system, stepless irradiation regulation.
Accurate chamber temperature control, irradiation temperature, and heater raise the temperature, air conditioning refrigeration system.
Ultrasonic humidification system makes spray water even and low noise. Saturated steam humidifying, industrial refrigerating machine dehumidifying, and close loop control the humidity.
Large amount of testing specimen, be able to hold as 3 times of specimen quantity as air-cooled machine in a test.
Custom program capability and storage for additional user-defined tests.
De-ionized water system to ensure purity of cooling water and spray water.

Applicable Test Standards

Textiles
GB/T 8430, GB/T 14576, GB/T 8427, ISO 105-B02/B04/B06, AATCC 169, M&S C09/C09A, JIS L0843
Paints & Coatings
GB/T 1865, ASTM D6695, ISO 11341, NES M0135, ISO 16474-2
Rubber & Plastics
GB/T 12831, GB/T 9344, GB/T 16422.1, ASTM D2565, ISO 4892
Non-metallic Materials
AATCC TM16, ASTM G26, ASTM D4459, ASTM G155, GB/T 2423.24, GB/T 15102, GB/T 15104
Automotive
SAE J2527, SAE J1885, SAE J2212, SAE J1960, SAE J2412, ISO 3917, PV 1303, PV 3929, PV 3930, DVM 0067-MA, HES D6601, TSL 0601G, GMW3414, EDS-T-7415, D47 1431

Water-Cooled Vs Air-Cooled Xenon Arc Tester

Feature	Water-Cooled	Air-Cooled
Lamp Power	Up to 6000W	Typically ≤1500W
Spectrum Stability	Excellent, minimal drift	Prone to shift with heat
Temperature Control	Superior, closed-loop	Limited by fan cooling
Sample Capacity	3× higher per cycle	Lower, smaller chamber
Continuous Runtime	Long‑term stable	Shorter intervals
Maintenance	Lower, longer lamp life	Higher, more frequent checks

Buying Guide: How to Choose the Right Water-cooled Xenon Arc Tester

When selecting a xenon Weatherometer, focus on these factors:

Standard compliance:

Confirm it supports your required norms (GB, ISO, AATCC, SAE, etc.).

Prioritize Sample Throughput

Choose water-cooled for high capacity; air-cooled only for low-volume basic testing.

Control Performance

Look for Irradiation control, light irradiance sensor monitor, digital setting, automatic compensating system, stepless irradiation regulation.

Check Lamp & Cooling System

Does it accurately simulate the solar spectrum? Find out whether a water-cooled xenon arc lamp system meets your requirements.

Easy operation

Does it allow users to programme test parameters themselves and does it have a storage function capable of saving additional user-defined test plans?

After-Sales Support

Please select a supplier that can provide calibration services, operational training, spare parts, and a responsive after-sales service.

Conclusion

A high-performance water cooled light fastness tester is essential for accurate, compliant material weatherability and light fastness testing. The ASTM G155 Testing Machine GT-3000 combines stable water-cooled xenon lamp technology, precise closed-loop control, large specimen capacity, and wide standard compatibility to support reliable testing across many industries.