Foreword
Introduction
1 Scope
2 Normative references
3 Terms, definitions, symbols, units and abbreviated
   terms
4 Requirements
   4.1 Approach 1
   4.2 Approach 2
        4.2.1 Gas leakage rate
        4.2.2 Tolerances on gas concentration
        4.2.3 Dew point and moisture penetration index
        4.2.4 Edge seal strength
        4.2.5 Additional requirements for other gases than
               argon, sulfurhexafluoride and air
5 Principle
   5.1 Approach 1
   5.2 Approach 2
6 Apparatus
   6.1 Approach 1
        6.1.1 Gas chromatograph
   6.2 Approach 2
        6.2.1 Climate exposure
        6.2.2 Container for gas leakage rate measurement
        6.2.3 Gas analysis equipment
        6.2.4 Gas sampling device
7 Reagents and Materials
   7.1 Approach 1
   7.2 Approach 2
8 Test specimens
   8.1 Approach 1
   8.2 Approach 2
        8.2.1 Preparation of test specimens
        8.2.2 Number of test specimens
        8.2.3 Construction and appearance
9 Procedure
   9.1 Approach 1
   9.2 Approach 2
        9.2.1 Determination of internal volume of a test
               specimen
        9.2.2 Climate exposure
        9.2.3 Measuring the gas leakage
        9.2.4 Analysis of gas
        9.2.5 Evaluation
10 Precision of test method
   10.1 Approach 1
   10.2 Approach 2
11 Test report
   11.1 Approach 1
   11.2 Approach 2
Annex A (normative) - Calibration and standardization of the gas
        chromatograph for approach 1
   A.1 General
   A.2 Apparatus preparation
   A.3 Reference standard mixtures
   A.4 Reference standard introduction and separation
Annex B (normative) - Requirements for other gases
        for approach 2
   B.1 Durability of the gas and interaction with insulating
        glass components
   B.2 Effect on thermal- and sound insulation
   B.3 Assessment example with krypton gas filling
Annex C (informative) - Relationship between artificial and
        natural ageing with regard to thermal and sound
        insulation
Annex D (informative) - Determination of the gas leakage rate by
        gas chromatography for Approach 2
   D.1 General
   D.2 Principle of method
   D.3 Apparatus
        D.3.1 Full container
        D.3.2 Ring container
        D.3.3 Cooling trap
        D.3.4 Gas chromatograph
        D.3.5 Connecting pieces
        D.3.6 Solvents
        D.3.7 Purging and carrier gas
        D.3.8 Calibrating gas
   D.4 Preparation of test specimens
   D.5 Procedure
        D.5.1 Connection of the apparatus
        D.5.2 Installation of the test specimen
        D.5.3 Temperature
        D.5.4 Calibration
        D.5.5 Measurement of the gas leakage
        D.5.6 Blank test
        D.5.7 Result