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Homepage>ISO Standards>ISO 4221:1980-Air quality — Determination of mass concentration of sulphur dioxide in ambient air — Thorin spectrophotometric method
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download between 0-24 hoursReleased: 1980
ISO 4221:1980-Air quality — Determination of mass concentration of sulphur dioxide in ambient air — Thorin spectrophotometric method

ISO 4221:1980

ISO 4221:1980-Air quality — Determination of mass concentration of sulphur dioxide in ambient air — Thorin spectrophotometric method

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Standard´s number:ISO 4221:1980
Pages:7
Edition:1
Released:1980
DESCRIPTION

ISO 4221:1980


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.
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