introduction
ISO (International Organization for Standardization) is a global alliance of national standards bodies (ISO member bodies). The development of international standards is usually carried out through ISO technical committees. Each member institution interested in a subject on which a technical committee has been established has the right to be represented on that committee. International governmental and non-governmental organizations liaising with ISO are also involved in this work. ISO works closely with the International Electrotechnical Commission (IEC) on all matters of electrical standardization.

The procedures used to develop this document and those used for further maintenance are described in Part 1 of the ISO/IEC Directive. In particular, attention should be paid to the different approval criteria required for different types of ISO documents. This document has been drafted in accordance with the editing rules of ISO/IEC Directive Part 2 (see iso.org/directives).

ISO 4892.3-2016 “Exposure methods for laboratory light sources for plastics – Part 3 Fluorescent ultraviolet lamps”

Please note that certain elements of this document may be subject to patent rights. ISO is not responsible for identifying any or all such patents. Details of any patent rights identified during the preparation of the document will be found in the introduction and/or in the list of patent claims received by ISO (see iso.org/patents).

Any trade names used in this document are provided for the convenience of the user and do not constitute an endorsement.

For a description of the meaning of specific ISO terms and expressions related to conformity assessment, and for information on ISO’s compliance with WTO principles in Technical Barriers to Trade (TBT), please see the following URL: Foreword – Supplementary information

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

The fourth edition cancels and replaces the third edition (ISO 4892-3:2013), which constitutes a minor revision but with the following changes:

– In A.2.3, more information about lamp combinations was added.

ISO 4892.3-2016 “Exposure methods for laboratory light sources for plastics – Part 3 Fluorescent ultraviolet lamps”

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 flame carbon arc lamp

1 Range
This part of ISO 4892 specifies methods for exposing samples to fluorescent ultraviolet radiation, heat, and water in devices designed to simulate the weathering effects that occur when materials are exposed to global solar radiation in an actual end-use environment or through window glass.

The specimen is exposed to a fluorescent UV lamp under controlled environmental conditions (temperature, humidity, and/or water). Different types of fluorescent UV lamps can be used to meet all requirements for testing different materials.

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

General guidance is given in ISO 4892-1.

Note that fluorescent UV lamp exposure for paints, varnishes and other coatings is described in ISO 11507.

ISO 4892.3-2016 “Exposure methods for laboratory light sources for plastics – Part 3 Fluorescent ultraviolet lamps”

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, plastics – Methods of exposure to laboratory light sources – Part 1: General guidance

Only the standard information section is public. To see the full content, you need to purchase the standard through the official channels.