British Standards Institution

Source:: ISO
Committee:: PRI/21 - Testing of plastics
Categories:: Plastics. General
Comment period start date:: 08/07/2025
Comment period end date:: 31/08/2025
Number of comments:: 0

Comment by:

31st Aug

Scope

This document specifies a method for exposing plastics to concentrated solar radiation using reflecting concentrators to accelerate the weathering processes. The purpose is to assess property changes produced after specified stages of such exposures. The reflecting concentrators used in these exposures are sometimes referred to as “Fresnel reflectors” because in cross-section the array of mirrors used to concentrate the solar radiation resembles the cross-section of a Fresnel lens.

General guidance concerning the scope of the ISO 877 series is given in ISO 877‑1.

NOTE Additional information about solar concentrating exposures, including a partial list of standards in which they are specified, is given in the Bibliography.

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Please email further comments to: debbie.stead@bsigroup.com

Standard timeline

1. Proposal (Complete)

Proposal start date:

2. Draft (Complete)

Draft start date:

21/02/2025

3. Public Comments

Public Comments start date:

08/07/2025

Public Comments end date:

31/08/2025

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Standards Development

BS EN ISO 877-3 ISO 877-3 Plastics. Methods of exposure to solar radiation. Part 3: Intensified weathering using concentrated solar radiation

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