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Category Articles : Standards

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  ISO Standard 4892-3 on Fl/UV Testing of Plastics Updated

  December 15, 2024 | Dr. Florian Feil

  Standards

  One of the most important weathering standards, ISO 4892-3 “Plastics - Methods of exposure to laboratory light sources - Part 3: Fluorescent UV lamps” was completely revised and recently released. Here are the major changes.

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  ISO 105-B04 and B10 - Two Different Standards for Weathering of Textiles

  August 30, 2024 | Dr. Florian Feil

  Standards

  There are two different ISO standards for weathering testing of textiles. This article explains the differences between ISO 105-B04 and B10 and provides guidance on which one to use for which application.

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  ISO 18543: Accelerated Aging of Electrochromic Glazings

  July 15, 2024 | Dr. Oliver D Rahaeuser

  Standards

  Electrochromic glazing, also known as smart windows or dynamic glass, represent a revolutionary advancement in building as well as transportation technology. These innovative glass panels dynamically adjust their transparency from clear to tinted (or opaque) in response to low voltage. As a result, they offer improved energy efficiency, user comfort, or enhanced privacy by press of a button.

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  Performance Checks With Reference Materials

  May 31, 2024 | Dr. Oliver D Rahaeuser

  Standards

  Weathering instruments face the challenge to simulate irradiance, spectrum, air temperature, surface temperature, and relative humidity simultaneously with sufficient precision over the entire test area. Filtered xenon-arc devices come in various forms, including flatbed and rotating rack designs. Their sample areas range from 500 to 12,000 cm², and control technologies such as sensor type and sensor location differ considerably. Consequently, the precision, i.e. repeatability and reproducibility, depends strongly on the type of instrument.
  

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  Wet or Dry Samples - Potential Source of Error in Weathering Tests

  May 14, 2024 | Dr. Florian Feil

  Standards

  Weathering tests should not be interrupted while the samples are in the middle or end of a wetting phase. Handling or evaluating wet samples is a source of error which must be avoided.

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  ISO 105-B10 Weathering Testing of Outdoor Textile Products

  January 14, 2024 | Dr. Oliver D Rahaeuser

  Standards

  Many textile products are used outdoors where weather factors have a significant impact on tents, backpacks, clothing, and sports equipment. Proper accelerated weathering testing is critical to assess weather durability of textiles for outdoor use. Key is the international standard ISO 105-B10.

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  ISO Blue Wool No. 6 for Hot Light Fastness

  December 15, 2023 | Dr. Florian Feil

  Standards

  In their end-use environment, automotive interior materials are expose to very specific and extreme conditions. An important factor is the solar radiation filtered through the cabin glass, which triggers photochemical degradation reactions, e.g. degradation of

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  ASTM D7869 or SAE J2527 – Which is More Appropriate?

  October 16, 2023 | Dr. Florian Feil

  Standards

  Over ten years ago, ASTM D7869 “Xenon Arc Exposure Test with Enhanced Light and Water Exposure for Transportation Coatings” was first introduced as a new and revolutionary weathering standard for automotive and general transportation coatings. This standard is based on the careful consideration of photochemical- and moisture-related coating degradation and a hot, humid end-use environment.

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  Irradiance Spectra in Weathering Testing – A New Guide

  March 30, 2023 | Andreas Riedl

  Standards

  Solar radiation is the primary weather factor in material degradation, and accurately simulating the solar spectrum is critical for realistic and precise laboratory weathering testing. The photons capable of initiating photochemical reactions are particularly important, and their energy increases as the radiation's wavelength decreases. Thus, the UV cut-on plays a significant role in each light source used for laboratory weathering.

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  8 Key Organizations for Weathering Standards You Need to Know

  March 15, 2023 | Andreas Riedl

  Standards

  Reliable standards tailored to the application are essential for accurate, realistic and accelerated weathering testing. However, with hundreds of published standards and methods, it is interesting to know who is developing these important documents.

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