AS/NZS 3580.2.2:2009

1 - AS/NZS 3580.2.2:2009 METHODS FOR SAMPLING AND ANALYSIS OF AMBIENT AIR - PREPARATION OF REFERENCE TEST ATMOSPHERES-...
1 - PREFACE
1 - FOREWORD
1 - METHOD
1 - 1 SCOPE
1 - 2 REFERENCED DOCUMENTS
2 - 3 DEFINITIONS
2 - 3.1 Certified Reference Material (CRM)
2 - 3.2 Full scale
2 - 3.3 Linearity
2 - 3.4 Parts per million (ppm)
2 - 3.5 Test atmosphere
2 - 3.6 U95
2 - 3.7 Zero air
2 - 4 PRINCIPLE
2 - 5 APPARATUS
2 - 5.1 Certified Reference Material cylinder
3 - 5.2 Zero air
3 - 5.3 Dilution apparatus
3 - 5.4 Gas transfer lines
3 - 5.5 Reference flow meter
3 - 5.6 Reference thermometer
3 - 5.7 Reference barometer
3 - 6 USE OF APPARATUS
3 - 6.1 General
3 - 6.2 Certified Reference Material (CRM)
3 - 6.2.1 General
3 - 6.2.2 Low temperature
4 - 6.2.3 Elevated temperature
4 - 6.2.4 Water
4 - 6.2.5 Storage and handling
4 - 6.2.6 Minimum pressure
4 - 6.2.7 Storage life
4 - 6.2.8 Pressure reduction and flow
5 - 6.3 Regulators, transfer lines and dilution apparatus materials
6 - 6.4 Zero air
7 - 6.5 Analyser
7 - 6.6 Manifold
7 - 6.7 Dilution apparatus
8 - 6.8 Reference flow meter
8 - 7 CALIBRATION
8 - 8 PROCEDURE
8 - 8.1 Calculation of compressed gas CRM flow rate
9 - 8.2 Preparation of reference test atmospheres
9 - 9 MEASUREMENT UNCERTAINTY
11 - APPENDIX A - CERTIFIED REFERENCE MATERIAL REVALIDATION
11 - A1 SCOPE
11 - A2 PROCEDURE
12 - A3 CALIBRATION RECORD

This Standard sets out a method for the preparation of reference test atmospheres containing known concentrations of determinand(s), using a calibration gas dilution method. The method is applicable to components that do not react with each other, the cylinder walls or the dilution gas, and that remain totally vaporized in the cylinder at all pressures and temperatures anticipated during the preparation and use of the reference test atmosphere.

Originated as AS 2573 1982.
Previous edition AS 3580.2.2 1990.
Jointly revised and designated as AS/NZS 3580.2.2:2009.