04/30098167 DC : DRAFT APR 2004

Foreword
Introduction
1 Scope
2 Normative references
3 Terms and definitions
4 Principle
5 General
6 Equipment and apparatus
  6.1 Liquids
      6.1.1 Diluent and rinsing liquid
      6.1.2 Clean-up filter
      6.1.3 Liquid dispensers
      6.1.4 Filtration apparatus
  6.2 Sample containers
  6.3 Specific items
      6.3.1 Intermediate receptacle
      6.3.2 Sampling apparatus
      6.3.3 Stirrer
      6.3.4 Flow metre
      6.3.5 Device for degassing (optional)
  6.4 Analysis equipment
      6.4.1 Automatic light extinction particle counter (APC)
      6.4.2 Computer
      6.4.3 Influencing parameters
      6.4.4 Measuring range
      6.4.5 Accuracy
  6.5 Environment conditions and precautions
      6.5.1 Location
      6.5.2 Electrical interference
      6.5.3 Chemicals
7 Calibration and verification
  7.1 Verification
  7.2 Calibration
8 Procedure
  8.1 Validation
  8.2 Conditioning of the analysis set-up
  8.3 Blank check of the analysis set-up
  8.4 Preparation of the extraction sample
      8.4.1 Pre-assessment - suitability and dilution
      8.4.2 Re-dispersion of contaminants
  8.5 Sample analysis
9 Results
  9.1 Calculation
  9.2 Expression
Annex A (informative) APC analysis
Annex B (informative) Summary of the analysis procedure
  B.1 Summary of the analysis procedure
Annex C (informative) Example of configuration - Sampling
                      apparatus
  C.1 Configurations
Annex D (informative) Supplementary procedures
  D.1 Sample dilution
      D.1.1 Single-step dilution
  D.2 Analysis of different liquids
  D.3 Checking the zero count-rate of the instrument
Annex E (informative) Typical analysis report
  E.1 Analysis protocol
  E.2 Analysis result
Bibliography