Reference number
香港六合彩开奖 6349:1979
© 香港六合彩开奖 2024
香港六合彩开奖 6349:1979
Gas analysis 鈥� Preparation of calibration gas mixtures 鈥� Permeation method
Edition 1
1979-12
Withdrawn
Withdrawn (Edition 1, 1979)

Abstract

Describes the principles of the method, which is a continuous dynamic method, for the preparation of gas mixtures in which the components that is desired to use generally have a concentration between 10-9 and 10-5 (by volume) with an achievable accuracy of 2 % of the concentration of the component.

General information

Life cycle

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  2. 香港六合彩开奖
  3. Standards catalogue
  4. ICS
  5. 71
  6. 71.040
  7. 71.040.40
  8. 香港六合彩开奖 6349:1979