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BS EN ISO 12624:2022

BS EN ISO 12624:2022

$102.76

Thermal insulating products for building equipment and industrial installations. Determination of trace quantities of water-soluble chloride, fluoride, silicate, sodium ions and pH

Published By Publication Date Number of Pages
BSI 2022 20
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This document specifies the equipment and procedures for determining trace quantities of the water-soluble chloride, fluoride, silicate and sodium ions in an aqueous extract of the product. It also describes a procedure for the determination of the pH of the aqueous extract. It is applicable to thermal insulating products. NOTE      The determination of these parameters can be relevant for thermal insulating products intended for application to stainless austenitic steel surfaces. The presence of chloride, fluoride, silicate and sodium ions under certain conditions can influence the risk of stress corrosion cracking. See Annex B for further information on general use of this document.

PDF Catalog

PDF Pages PDF Title
2 National foreword
4 European foreword
6 Foreword
7 1 Scope
2 Normative references
3 Terms and definitions
4 Principle
5 Apparatus
5.1 General information
8 5.2 Preparation of aqueous extracts
5.3 Analyses
5.4 Materials
9 6 Test specimens
6.1 General
6.2 Dimensions of test specimens
6.3 Number of test specimens
6.4 Conditioning of test specimens
7 Procedure
7.1 Test conditions
7.2 Test procedure
7.2.1 Preparation of the leaching solution
10 7.2.2 Chloride determination
11 7.2.3 Fluoride determination
7.2.4 Silicate determination
12 7.2.5 Sodium determination
7.2.6 pH determination by use of pH meter
8 Calculation and expression of results
8.1 General
8.2 Chloride (Cl−)
8.2.1 Ion chromatography
13 8.2.2 Silver nitrate titration
8.3 Fluoride (F−)
8.4 Silicate (SiO3− −)
14 8.5 Sodium (Na+)
8.6 pH
9 Accuracy of measurement
15 10 Test report
16 Annex A (normative) Spectrophotometric determination of fluoride with zirconium SPADNS
17 Annex B (informative) General information related to the use of this document
18 Annex C (informative) Example of borosilicate glass equipment to prepare leaching solutions for thermal insulating products that float

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BS EN ISO 12624:2022
$102.76