AWL are pleased to announce additional scope for its UV weathering and Taber abrasion testing capability. ISO 16474-3:2013 specifies methods for exposing coatings to fluorescent UV lamps, heat and water in apparatus designed to reproduce the weathering effects that occur when materials are exposed in actual end-use environments to daylight, or to daylight through window glass. The coatings are exposed to different types of fluorescent UV lamps under controlled environmental conditions (temperature, humidity and/or water). Coatings are exposed to different types of fluorescent UV lamps of specific narrowband wavelengths under controlled environmental conditions (irradiance, temperature, humidity and / or water spray). Different types of fluorescent UV lamp may be used to meet all the requirements for testing different materials. Different types of fluorescent UV lamp may be used to meet all the requirements for testing different materials. Evaluations of results are covered by various parts of the ISO 4628 standard. General guidance is given in ISO 16474-1. NOTE Fluorescent UV lamp exposures for plastics are described in ISO 4892-3. Fluorescent UV lamp exposures for plastics are described in ISO 4892-3 for which AWL are also accredited.
ISO 7784-2:2013 / BS 3900:E14 specifies a method for determining the resistance to abrasion of coatings, for which two loaded, freely rotatable but eccentrically arranged abrasive rubber wheels affect the coating of the rotating test specimen. Rotary Taber abrasion testing at AWL is in high demand due to the ability to provide very accurate relative abrasion performance data. AWL are also accredited by UKAS for testing in accordance with ASTM D4060.