EN 13468:2001

Foreword
1 Scope
2 Normative references
3 Terms and definitions
4 Principle
5 Apparatus
6 Test specimens
7 Procedure
8 Calculation and expression of results
9 Accuracy of measurement
10 Test report
Annex A (normative) Spectrophotometric determination of
        fluoride with zirconium-SPADNS
Annex B (informative) General information related to the
        use of this standard
Annex C (informative) Example of ion chromatography equipment
Annex D (informative) Example of borosilicate glass equipment
        to prepare leaching solutions for
        thermal insulating products that float

This standard speci-fies the equipment and procedures for determi-ning 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. The standard is applicable to thermal insula-ting products.NOTE The determination of these parameters may be relevant for thermal insula-ting products intended for application to stainless austenitic steel surfa-ces. The presence of chloride, fluoride, silicate and sodium ions under certain conditions may influen-ce the risk of stress corrosion cracking. See informative annex B for further information.