ISO 4221:1980

Air quality — Determination of mass concentration of sulphur dioxide in ambient air — Thorin spectrophotometric method

STANDARD published on 1.11.1980

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electronic design (pdf) (97.70 USD)

French -

Print design (97.70 USD)

The information about the standard:

Designation standards: ISO 4221:1980
Publication date standards: 1.11.1980
The number of pages: 7
Approximate weight : 21 g (0.05 lbs)
Country: International technical standard
Category: Technical standards ISO

Annotation of standard text ISO 4221:1980 :

Description / 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.