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BS EN 15458:2022

BS EN 15458:2022

$102.76

Paints and varnishes. Laboratory method for testing the efficacy of film preservatives in a coating against algae

Published By Publication Date Number of Pages
BSI 2022 16
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This document specifies a laboratory test method for determining the biocidal or biostatic efficacy of single active substances or combinations thereof used in film preservatives of coatings against algal growth. The document does not apply to coatings unsusceptible to algal growth. The test method covers only active substances for film preservation, not the substrate itself, e.g. wood, which is dealt with in another standard. The test method is applicable for active substances used for wood protection and masonry coatings. It is not applicable to marine coatings. Safety, health and environmental aspects are not in the scope of this document. Determination of the performance of film preservatives in coatings by applying ageing procedures is not within the scope of this document.

PDF Catalog

PDF Pages PDF Title
2 National foreword
5 European foreword
6 Introduction
7 1 Scope
2 Normative references
3 Terms and definitions
8 4 Principle
5 Apparatus and materials
5.13 Microscope.
5.15 Device for applying the coating.
5.17 Sterile tweezers.
5.18 Sterile water.
9 5.20 Luxmeter or quantummeter.
5.21 Cold white or daylight lamp.
6 Microorganisms
7 Sampling and preparation of test samples and of test specimens
7.1 Sampling
7.2 Preparation of test samples (see Annex A)
7.3 Conditioning of the test samples
7.4 Preparation and number of test specimens
10 8 Procedure
8.1 Preparation of Bold’s Basal Medium
8.2 Preparation of the Bold’s Basal Medium stock solutions
8.3 Preparation of the Petri dishes with culture medium
11 8.4 Preparation of stock cultures and sub-cultures
8.4.1 Stock cultures:
8.4.2 Sub-cultures:
8.5 Preparation of the algal suspension
8.6 Inoculation and incubation (see Annex A)
12 8.7 Assessment
9 Test report
14 Annex A (informative) Laboratory method for testing the efficacy of film preservatives in a coating against algae
15 Bibliography

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BS EN 15458:2022
$102.76