BS 4559-7 81st Edition, April 30, 1981
Preparation of Calibration Gas Mixtures Part 7: Permeation Method
Includes all amendments and changes through Reaffirmation Notice , 1997
Additional Comments: SAME AS ISO 6349
Published By:British Standards Institution (BSI)
Describes principles and examples of apparatus for a permeation procedure for the continuous preparation of calibration gas mixtures.