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QUV test

The QUV test: how long does it take for your product to discolor?

With the QUV test, you verify your product’s resistance to sunlight, heat and moisture according to ISO standards. This test simulates the effect of years of weathering in a few weeks and is the most widely used test worldwide for simulation of aging by UV light.

Want to check your product’s resistance to UV light with the QUV test?

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This is what the QUV test measures

The QUV test is a weathering test and is used to check the resistance to UV light, moisture and heat. It is particularly intended for products that are (frequently) used outdoors, such as facade elements, vehicles , patio furniture and outdoor lamps.

This weathering test simulates the years-long influence of sun and moisture on a coating or plastic over a short period of time.

Opportunities during testing

The QUV test uses only light from the UV spectrum (340 nm). By default, this is UVA light, but it is also possible to test with UVB light (313 nm).

In most cases, testing is done with a combination of light and water vapor. This simulates what happens in practice during the day and night (sunlight and dew) Often this is 4 hours of light and 4 hours of condensation, but sometimes also 8 hours of light and 4 hours of water condensation.

Want to know which test applies to your product?

These materials are suitable

The QUV test is intended for:

  • Coatings on all possible substrates;
  • Plastic surfaces with or without coatings.

Want to have another material tested? Then call 013 – 463 06 88 for the possibilities.

The QUV test can be performed according to the following quality standards

As standard, we perform the QUV test according to the quality standard ISO 4892-3 and NEN-ISO 16474, both with UVA lamps. Upon request, we can also test according to other ISO and ASTM standards.

Methodology

The test material is exposed alternately to UV light and moisture in a climate chamber, the temperature is set here according to the applicable quality standard.

During the QUV test, special UV fluorescent lamps simulate the effect of UV radiation in sunlight. The climate cabinet also allows condensation to form on the test material in a controlled manner to simulate dew.

Test duration of the QUV test

The correlation between the QUV test and practice depends on several factors, including the type of material and the application of the product. We can only determine that exact correlation if we have real-world data that we can compare with laboratory results.

In theory, 500 hours of testing with artificial UVA lamps roughly corresponds to a year of sunlight, heat and moisture in Western Europe. In practice, however, this is often more towards 250 hours for a year of practice.

Please note that this is only a rule of thumb. Please contact the specialists at M2LAB for advice on the test duration relevant to your situation and product.

Reporting and advice

Within five business days of completing the QUV test, you will receive a report with the results. After reading the report, you may still need advice on how to improve the quality of the product. As specialists in the field of industrial surface treatment, our employees always have advice to help you with this.

Call +31 (0)13 463 06 88 for more information on turnaround times for your required laboratory tests.

Want to have your product tested according to the ISO 4892-3 or 16474-3 standard?