introduction
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ISO 4892.4-2013 Exposure methods for laboratory light sources in plastics – Part 2: Open carbon arc lamps

The committee responsible for this document is ISO/TC 61, Plastics, Subcommittee SC 6, Ageing, Chemical and Environmental Tolerance.

The third edition cancelled and replaced the second edition (ISO 4892-4:2004), which was a minor edition. It also incorporates ISO 4892-4:2004 / Corr.1:2005 Technical Corrigendum.

ISO 4892 consists of the following parts, under the general heading “Plastics – Methods of exposure to laboratory light sources” :

– Part 1: General guidance

– Part 2: Xenon arc lamp

– Part 3: Fluorescent UV lamps

– Part 4: Open carbon arc lamp

ISO 4892.4-2013 Exposure methods for laboratory light sources in plastics – Part 2: Open carbon arc lamps

1 Range
This part of ISO 4892 specifies methods for exposing a sample to an open carbon arc lamp in the presence of moisture to reproduce the weathering effects that occur when the material is exposed to the actual end-use environment, sunlight or sunlight filtered through window glass.

The sample is exposed to an open carbon arc light filtered under controlled environmental conditions (temperature, humidity). Various filters are described.

Sample preparation and result evaluation are covered in other international standards for specific materials.

General guidance is given in ISO 4892-1.

2 Normative references
All or part of the following documents are referred to normatively in this document and are required for their application. For dated references, only the cited version applies. For undated references, a new version of the reference (including any revisions) applies.

ISO 4582, plastics – Determination of changes in color and properties after exposure to sunlight under glass, natural weathering or laboratory light sources

ISO 4892-1:1999, Plastics. Methods of exposure to laboratory light sources. Part 1: General guidance

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