NF EN ISO 6142
NF EN ISO 6142

NF EN ISO 6142

December 2006
Standard Cancelled

Gas analysis - Preparation of calibration gas mixtures - Gravimetric method (ISO 6142:2001)

Le présent document s''applique uniquement aux mélanges de gaz homogènes et stables. De ce fait, les conditions d''état considérées (pression et température) doivent être nettement en dehors du domaine de condensation du mélange de gaz et de chacun des analytes spécifiés.

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Main informations

Collections

National standards and national normative documents

Publication date

December 2006

Release date

octobre 2015

Number of pages

45 p.

Reference

NF EN ISO 6142

ICS Codes

71.040.40   Chemical analysis

International kinship

ISO 6142:2001

European kinship

EN ISO 6142:2006
Sumary
Gas analysis - Preparation of calibration gas mixtures - Gravimetric method (ISO 6142:2001)

Le présent document s''applique uniquement aux mélanges de gaz homogènes et stables. De ce fait, les conditions d''état considérées (pression et température) doivent être nettement en dehors du domaine de condensation du mélange de gaz et de chacun des analytes spécifiés.
Replaced standards (1)
NF X20-202
NF X20-202
December 1979
Published document Cancelled
Gas analysis. Preparation of calibration gas mixtures. Gravimetric methods.

Standard replaced by (1)
NF EN ISO 6142-1
NF EN ISO 6142-1
November 2015
Standard Current
Gas analysis — Preparation of calibration gas mixtures — Part 1: Gravimetric method for Class I mixtures

Le présent document spécifie une méthode gravimétrique de préparation des mélanges de gaz pour étalonnage dans des bouteilles, avec des valeurs traçables de la fraction molaire d''un ou plusieurs constituants. Il décrit une méthode de calcul de l''incertitude associée à la fraction molaire de chaque constituant. Ce calcul de l''incertitude nécessite l''évaluation des contributions à l''incertitude dues à des facteurs tels que le processus de pesée, la pureté des constituants, la stabilité du mélange et la vérification du mélange final.

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