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BS EN ISO 16474-3:2021

BS EN ISO 16474-3:2021

$142.49

Paints and varnishes. Methods of exposure to laboratory light sources – Fluorescent UV lamps

Published By Publication Date Number of Pages
BSI 2021 26
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This document specifies methods for exposing coatings to fluorescent UV lamps, heat and water in apparatus designed to reproduce the weathering effects that occur when materials are exposed in actual end-use environments to daylight, or to daylight through window glass.

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

Specimen preparation and evaluation of the results are covered in other ISO documents for specific materials.

General guidance is given in ISO 16474-1.

NOTE

Fluorescent UV lamp exposures for plastics are described in ISO 4892-3 .

PDF Catalog

PDF Pages PDF Title
2 National foreword
4 European foreword
6 Foreword
7 Introduction
9 1 Scope
2 Normative references
3 Terms and definitions
10 4 Principle
11 5 Apparatus
5.1 Laboratory light source
14 5.2 Test chamber
5.3 Radiometer
5.4 Black-standard/black-panel thermometer
15 5.5 Wetting and humidity
5.5.1 General
5.5.2 Spray and condensation system
5.6 Specimen holders
5.7 Apparatus to assess changes in properties
6 Test specimens (panels)
6.1 General
16 6.2 Preparation and coating
6.3 Drying and conditioning
6.4 Thickness of coating
6.5 Number of test panels
7 Test conditions
7.1 General
7.2 Radiation
7.3 Temperature
17 7.4 Relative humidity of chamber air
7.5 Condensation and spray cycles
7.6 Complex cycles with dark periods
7.7 Sets of exposure conditions
18 8 Procedure and mounting of the test specimens
8.1 General
8.2 Exposure
19 8.3 Measurement of radiant exposure
8.4 Determination of changes in properties after exposure
9 Test report
20 Annex A (informative) Spectral distribution of radiation for typical fluorescent UV lamps
24 Bibliography

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BS EN ISO 16474-3:2021
$142.49