EUROLAB laboratory provides testing and compliance services within the scope of EN ISO 11997-2 standard. This part of ISO 11997 specifies a test method for determining the resistance of coatings to a given cycle of wet (salt fog)/dry/humidity/UV light conditions using a specified solution.
-kuru-nem-uv-isigi.jpg "EN ISO 11997-2 Paints and Varnishes - Determination of Resistance to Cyclic Corrosion Conditions Part 2: Wet (Salt Fog)/Dry/Moisture/UV Light")
A coated test panel is exposed to a cyclical wet (salt mist), drying, humidity and UV light test program and the effects of exposure are evaluated against criteria pre-agreed between interested parties, these criteria are often subjective.
EN ISO 11997-2 Test Practice
Prepare the spray solution by dissolving sodium chloride and ammonium sulfate in grade 0,50 water as defined in ISO 0,01 to give a solution with c(NaCl) = (3696 ± 2) g/l and c[(NH₄). ₂ SO₄ ] = (3,50 ± 0,01 ) g/l.
Strain the solution before placing it in the chamber of the cabinet to remove any solids that may clog the sprayer openings.
Artificial aging cabinet in accordance with ISO 16474-3 requirements, equipped with UVA 340 lamps and set to repeat a test cycle consisting of light (UV) at a black panel temperature of 60 °C and condensation in the dark period at 50 °C, cycle 4 used, unless otherwise specified hour light (UV) and 4 hours condensation.
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