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ISO 21895:2026 Categorization and classification of civil uncrewed aircraft systems

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ISO 9853:2026 Thermoplastics piping systems — Crushing test for moulded fittings

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ISO 20915:2026 Life cycle inventory calculation methodology for steel products

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ISO 4221:1980

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

CDN $129.00

Description

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.

Edition

1

Published Date

1980-11-01

Status

PUBLISHED

Pages

7

Language Detail Icon

English

Format Secure Icon

Secure PDF

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.

Previous Editions

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