International Standard
ISO 7934:1989
Stationary source emissions — Determination of the mass concentration of sulfur dioxide — Hydrogen peroxide/barium perchlorate/Thorin method
Reference number
ISO 7934:1989
Edition 1
International Standard
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ISO 7934:1989
Published (Edition 1, 1989)
This standard was last reviewed and confirmed in 2022. Therefore this version remains current.
This standard has 1 amendment.

ISO 7934:1989

ISO 7934:1989
CHF 42
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The procedure is applicable from a minimum of 30 mg/m3 by reference to sampling periods of mormally 30 min. At mass concentrations greater than 2 000 mg/m3 the volume of the waste gas under investigation passed through the sampling train is 30 litres. Substances, which are known to have an effect on the titration reading are given. All concentrations are based on dry gas at a temperature of 273,1 K and a pressure of 101,3 kPa.

General information

  •  : Published
     : 1989-08
    : International Standard confirmed [90.93]
  •  : 1
     : 6
  • ISO/TC 146/SC 1
  • RSS updates


Amendments are issued when it is found that new material may need to be added to an existing standardization document. They may also include editorial or technical corrections to be applied to the existing document.

Amendment 1

Edition 1998

ISO 7934:1989/Amd 1:1998
CHF 18
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Life cycle

Sustainable Development Goals

This standard contributes to the following Sustainable Development Goal

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