Humidity Resistance Test Equipment

EN ISO 6270-1 / EN ISO 6270-2 (CH) / ASTM D2247

This test is preferred for determining the resistance of paint films, paint systems, and related products to high humidity conditions, according to the coating or product specifications. By simulating the effects of rain and dew that might be encountered in outdoor atmospheric conditions, the success of the coating and surface treatment is revealed. This method can be applied to coatings on both porous substrate materials such as wood, plaster, and gypsum board, as well as non-porous substrates like metals.

Test methods involve heating water to a specific temperature to generate water vapor within the test chamber. Test panels or finished products are surrounded by air enriched with moisture, allowing the coating to absorb the water and potentially cause damage.

Water penetrates the coating depending on its characteristics. Any effects such as color change, blistering, loss of adhesion, softening, or brittleness are observed and reported. The exposure conditions can be adjusted by selecting the test duration.

Failure in humidity tests can result from a variety of factors, including a defect in the coating itself, contamination of the substrate, or insufficient surface preparation. Therefore, this application is useful for evaluating coatings alone or for assessing entire coating systems.

To operate this device, you will need the following systems:

• Pure water (with a conductivity of 5 μs/cm)
• Water drainage (for draining used water)

ISO 6270-1: Condensation (one-sided exposure)

Panel samples are used for the test. One side of the test panel is exposed to an environment with approximately 100% relative humidity at 40°C, while the other side is exposed to ambient conditions. Afterward, the coated samples are examined for degradation in the coating (such as blistering, staining, softening, wrinkling, and brittleness) and degradation in the substrate material at the end of the humidity tests.

ISO 6270-2 (CH) / ASTM D2247: Constant Humidity Condensation Atmosphere

The methods describe a constant and steady humidity in a chamber where condensation occurs across the entire surface. In both methods, panels or finished products can be tested. Test samples are exposed to approximately 100% condensation at 40°C inside the chamber. At the end of the humidity test, the coated parts are examined for degradation in the coating (such as blistering, staining, softening, wrinkling, and brittleness) and degradation in the substrate material.

The cabinets can be produced as either desktop or cab