International Standard
ISO 4221:1980
Air quality — Determination of mass concentration of sulphur dioxide in ambient air — Thorin spectrophotometric method
Reference number
ISO 4221:1980
Edition 1
1980-11
International Standard
Read sample
ISO 4221:1980
10015
Published (Edition 1, 1980)
This standard was last reviewed and confirmed in 2023. Therefore this version remains current.

ISO 4221:1980

ISO 4221:1980
10015
Language
Format
CHF 63
Convert Swiss francs (CHF) to your currency

Abstract

Applies to the range of 3,5 to 150 micrograms per cubic metre, assuming an air sample volume of 2 m3 and a sample solution volume of 50 ml. For higher concentrations, dilution of the sample may be necessary.

General information

  •  : Published
     : 1980-11
    : International Standard confirmed [90.93]
  •  : 1
     : 7
  • ISO/TC 146/SC 3
    13.040.20 
  • RSS updates

Life cycle

Got a question?

Check out our Help and Support