ISO 12624:2011
(Main)Thermal insulating products for building equipment and industrial installations — Determination of trace quantities of water soluble chloride, fluoride, silicate, sodium ions and pH
Thermal insulating products for building equipment and industrial installations — Determination of trace quantities of water soluble chloride, fluoride, silicate, sodium ions and pH
ISO 12624:2011 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. ISO 12624:2011 is applicable to thermal insulating products.
Produits isolants thermiques — Détermination des faibles quantités d'ions chlorure, fluorure, silicate et sodium solubles dans l'eau et mesure du pH
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Standards Content (Sample)
INTERNATIONAL ISO
STANDARD 12624
First edition
2011-01-15
Thermal insulating products for building
equipment and industrial installations —
Determination of trace quantities of water
soluble chloride, fluoride, silicate,
sodium ions and pH
Produits isolants thermiques — Détermination des faibles quantités
d'ions chlorure, fluorure, silicate et sodium solubles dans l'eau et
mesure du pH
Reference number
ISO 12624:2011(E)
©
ISO 2011
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ISO 12624:2011(E)
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ii © ISO 2011 – All rights reserved
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ISO 12624:2011(E)
Contents Page
Foreword .iv
1 Scope.1
2 Normative references.1
3 Principle .1
4 Apparatus.2
4.1 Preparation of aqueous extract .2
4.2 Analyses.2
4.3 Materials .2
5 Test specimens.3
5.1 General .3
5.2 Dimensions of test specimens.3
5.3 Number of test specimens .3
5.4 Conditioning of test specimens.3
6 Procedure.3
6.1 Test conditions.3
6.2 Test procedure.3
7 Calculation and expression of results .6
−
7.1 Chloride (Cl ) .6
−
7.2 Fluoride (F ) .7
− −
7.3 Silicate (SiO ).8
3
+
7.4 Sodium (Na ).8
7.5 pH.8
8 Accuracy of measurement .8
9 Test report.9
Annex A (normative) Spectrophotometric determination of fluoride with zirconium SPADNS .11
Annex B (informative) General information related to the use of this International Standard .12
Annex C (informative) Example of ion chromatography equipment .13
Annex D (informative) Example of borosilicate glass equipment to prepare leaching solutions for
thermal insulating products that float.14
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ISO 12624:2011(E)
Foreword
ISO (the International Organization for Standardization) is a worldwide federation of national standards bodies
(ISO member bodies). The work of preparing International Standards is normally carried out through ISO
technical committees. Each member body interested in a subject for which a technical committee has been
established has the right to be represented on that committee. International organizations, governmental and
non-governmental, in liaison with ISO, also take part in the work. ISO collaborates closely with the
International Electrotechnical Commission (IEC) on all matters of electrotechnical standardization.
International Standards are drafted in accordance with the rules given in the ISO/IEC Directives, Part 2.
The main task of technical committees is to prepare International Standards. Draft International Standards
adopted by the technical committees are circulated to the member bodies for voting. Publication as an
International Standard requires approval by at least 75 % of the member bodies casting a vote.
Attention is drawn to the possibility that some of the elements of this document may be the subject of patent
rights. ISO shall not be held responsible for identifying any or all such patent rights.
ISO 12624 was prepared by Technical Committee ISO/TC 163, Thermal performance and energy use in the
built environment, Subcommittee SC 1, Test and measurement methods.
ISO 12624 includes the original EN 13468 prepared by Technical Committee CEN/TC 88 Thermal insulating
materials and products. However,
⎯ Subclause 5.4, “conditioning of test specimen”,
⎯ Subclause 6.1, “test conditions”, and
⎯ Clause 9, “test report”
have been modified to reflect conditions for tropical countries.
This International Standard is one of a series of standards which specify test methods for determining
dimensions and properties of thermal insulating materials and products. The original EN 13468 supports a
series of product standards for thermal insulating materials and products which derive from the Council
Directive of 21 December 1988 on the approximation of laws, regulations and administrative provisions of the
Member States relating to constructive products (Directive 89/106/EEC) through the consideration of the
essential requirements.
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ISO 12624:2011(E)
This International Standard is one of a series of existing European Standards on test methods for products
used to insulate building equipment and industrial installations which is comprised of the following group of
International Standards:
Respective
ISO standard Title
EN standard
ISO 12623 Thermal insulating products for building equipment and industrial EN 13472
installations — Determination of short-term water absorption by partial
immersion of preformed pipe insulation
ISO 12624 Thermal insulation products — Determination of trace quantities of water EN 13468
soluble chloride, fluoride, silicate, sodium ions and pH
ISO 12628 Thermal insulating products for building equipment and industrial EN 13467
installations — Determination of dimensions, squareness and linearity of
preformed pipe insulation
ISO 12629 Thermal insulating products for building equipment and industrial EN 13469
installations — Determination of water vapour transmission properties of
preformed pipe insulation
A further series of existing European Standards on test methods was adopted by ISO. This “package” of
standards comprises the following group of interrelated standards:
Respective
ISO standard Title
EN standard
ISO 29465 Thermal insulating products for building applications — Determination of EN 822
length and width
ISO 29466 Thermal insulating products for building applications — Determination of EN 823
thickness
ISO 29467 Thermal insulating products for building applications — Determination of EN 824
squareness
ISO 29468 Thermal insulating products for building applications — Determination of EN 825
flatness
ISO 29469 Thermal insulating products for building applications — Determination of EN 826
compression behaviour
ISO 29470 Thermal insulating products for building applications — Determination of the EN 1602
apparent density
ISO 29471 Thermal insulating products for building applications — Determination of EN 1603
dimensional stability under constant normal laboratory conditions
(23 degrees C/50 % relative humidity)
ISO 29472 Thermal insulating products for building applications — Determination of EN 1604
dimensional stability under specified temperature and humidity conditions
ISO 29764 Thermal insulating products for building applications — Determination of EN 1605
deformation under specified compressive load and temperature conditions
ISO 29765 Thermal insulating products for building applications — Determination of EN 1607
tensile strength perpendicular to faces
ISO 29766 Thermal insulating products for building applications — Determination of EN 1608
tensile strength parallel to faces
ISO 29767 Thermal insulating products for building applications — Determination of EN 1609
short-term water absorption by partial immersion
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ISO 12624:2011(E)
Respective
ISO standard Title
EN standard
ISO 29768 Thermal insulating products for building applications — Determination of EN 12085
linear dimensions of test specimens
ISO 29769 Thermal insulating products for building applications — Determination of EN 12430
behaviour under point load
ISO 29770 Thermal insulating products for building applications — Determination of EN 12431
thickness for floating-floor insulating products
ISO 29771 Thermal insulating materials for building applications — Determination of EN 13820
organic content
ISO 29803 Thermal insulation products for building applications — Determination of the EN 13497
resistance to impact of external thermal insulation composite systems
(ETICS)
ISO 29804 Thermal insulation products for building applications — Determination of the EN 13494
tensile bond strength of the adhesive and of the base coat to the thermal
insulation material
ISO 29805 Thermal insulation products for building applications — Determination of the EN 13496
mechanical properties of glass fibre meshes
The Application of Agreement on technical cooperation between ISO and CEN (Vienna Agreement), Modes
1, 2, 4 and 5, was not approved by CEN/TC 88 and the necessity not seen by its stakeholders.
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INTERNATIONAL STANDARD ISO 12624:2011(E)
Thermal insulating products for building equipment and
industrial installations — Determination of trace quantities of
water soluble chloride, fluoride, silicate, sodium ions and pH
1 Scope
This International Standard 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. This International Standard is applicable to
thermal insulating products.
NOTE The determination of these parameters may 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.
2 Normative references
The following referenced documents are indispensable for the application of this document. For dated
references, only the edition cited applies. For undated references, the latest edition of the referenced
document (including any amendments) applies.
ISO 10136-1, Glass and glassware — Analysis of extract solutions — Part 1: Determination of silicon dioxide
by molecular absorption spectrometry
ISO 10136-2, Glass and glassware — Analysis of extract solutions — Part 2: Determination of sodium oxide
and potassium oxide by flame spectrometric methods
3 Principle
Test specimens of the insulating product are boiled or heated in deionized water to leach out soluble ions.
Tests to determine water soluble chloride, fluoride, silicate and sodium ions are performed on aliquots of the
filtered aqueous extract. A pH value is determined on one of the aliquots.
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ISO 12624:2011(E)
4 Apparatus
All equipment and working instruments used for this purpose shall be free of soluble chloride, fluoride, silicate,
sodium ions, and grease. Chloride-free solvents shall be used to clean equipment and working instruments
(avoid chlorinated solvents). During the performance of the analytic procedure, extraneous sources of these
ions shall be reduced or eliminated.
4.1 Preparation of aqueous extract
4.1.1 1 000 ml borosilicate glass flask.
4.1.2 Water condenser.
4.1.3 Heater, complying with the requirements of 7.2.
4.1.4 Prewashed filter, diameter of pores 0,45 µm.
4.1.5 Cork borer, having a diameter which enables taking the specified mass for the test specimen.
4.1.6 Disposable gloves.
4.1.7 Plastic bag or container.
4.1.8 Balance, permitting reading to ±0,01 g.
4.2 Analyses
4.2.1 Ion chromatography equipment (IC). See Annex C for an example of suitable equipment.
4.2.2 Titration equipment with automatic end point.
4.2.3 Atomic Absorption Spectrophotometer (AAS).
4.2.4 Atomic Emission Spectrometer with Inductively Coupled Plasma (ICP-AES).
4.2.5 Spectrophotometer.
4.2.6 pH meter/millivolt meter.
4.2.7 Fluoride ion selective electrode.
NOTE Any device providing the same result with at least the same accuracy can be used.
4.3 Materials
4.3.1 Deionized water, conductivity less than 0,5 µS/cm.
4.3.2 0,01 N sodium chloride (NaCl).
4.3.3 0,01 N silver nitrate (AgNO ).
3
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ISO 12624:2011(E)
5 Test specimens
5.1 General
To ensure that the results are representative of the product, care shall be taken that the test specimens are
not subjected to any outside contamination.
5.2 Dimensions of test specimens
Take out each test specimen by using a cork borer at positions evenly distributed over the total surface of a
full size product. To avoid contamination, chloride-free gloves shall be worn and the test specimen shall be
placed in a closed polyethylene bag. Depending on the product family, the weight of each test specimen shall
be at least 7,5 g or 20 g.
5.3 Number of test specimens
The number of test specimens shall be as specified in the relevant product standard. If the number is not
specified, then at least three test specimens (three weights of 7,5 g or 20 g) shall be used.
NOTE In the absence of a product standard or any other European technical specification, the number of the test
specimens may be agreed between parties.
5.4 Conditioning of test specimens
The test specimens shall be stored for at least 6 h and not more than 24 h at (23 ± 5) °C. In case of dispute,
they shall be stored at (23 ± 2) °C for the time stated in the relevant product standard.
In tropical countries, different conditioning and testing conditions can be relevant. In this case, the conditions
shall be (27 ± 5) °C and (65 ± 5) % RH (relative humidity), and shall be stated clearly in the test report.
6 Procedure
6.1 Test conditions
The test shall be carried out at (23 ± 5) °C.
In tropical countries, different conditioning and testing conditions can be relevant. In this case, the conditions
shall be (27 ± 2) °C and (65 ± 5) % RH.
6.2 Test procedure
6.2.1 Preparation of the leaching solution
Take (20 ± 0,1) g or (7,5 ± 0,05) g of the test specimen (m), as specified in the relevant product standard and
place it in the wide-mouth glass flask. Add (400 ± 5) ml deionized water (V). The flask shall be closed with a
ground-in stopper and shaken
...
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