SIST EN ISO 4892-2:2013 PDF

Overview

EN ISO 4892-2:2013 - "Plastics - Methods of exposure to laboratory light sources - Part 2: Xenon‑arc lamps" - specifies controlled laboratory methods for exposing plastic specimens to xenon‑arc light together with moisture to reproduce weathering effects caused by daylight (or daylight through window glass). The standard defines required apparatus, exposure cycles, and measurement practices to simulate outdoor UV exposure, temperature, humidity and wetting in accelerated weathering tests.

Key Topics

• Scope and purpose
  • Reproduces daylight‑related weathering (radiation, temperature, humidity/wetting) for plastics and related materials.
  • Intended for comparative accelerated weathering under controlled laboratory conditions.
• Apparatus and components
  • Quartz‑jacketed xenon‑arc lamps with selectable filters to simulate daylight or window‑filtered daylight.
  • Test chamber, radiometer for irradiance measurement, black‑standard/black‑panel thermometer, wetting/humidity equipment and specimen holders.
• Spectral control and irradiance
  • Use of filters to shape spectral irradiance (UV and visible) - including options to remove short‑wavelength UV (