ISO 21438-1:2022
International Standard
Current Edition
·
Approved on
24 May 2022
Workplace atmospheres — Determination of inorganic acids by ion chromatography — Part 1: Non-volatile acids (sulfuric acid and phosphoric acid)
ISO 21438-1:2022 Files
English
22 Pages
Current Edition
OMR
64.25
ISO 21438-1:2022 Scope
This document specifies a method for the determination of the time-weighted average mass concentration of sulfuric acid and phosphoric acid in workplace air by ion chromatography. The anions are detected by conductivity.
The method is applicable to the personal sampling of airborne particles, as defined in ISO 7708, and to static (area) sampling.
The method does not apply to the determination of sulfur trioxide.
The procedure does not differentiate between the acids and their corresponding salts if both are present in the workplace air.
The procedure does not differentiate between phosphoric acid and diphosphorus pentoxide (phosphoric anhydride) if both are present in the workplace air.
Best Sellers
GSO 150-2:2013
Gulf Standard
Expiration dates for food products - Part 2 :
Voluntary expiration dates
OS GSO 150-2:2013
GSO 150-2:2013
Omani Standard
Expiration dates for food products - Part 2 :
Voluntary expiration dates
OS GSO 9:2022
GSO 9:2022
Omani Standard
Labeling of prepackaged food stuffs
GSO 9:2022
Gulf Technical Regulation
Labeling of prepackaged food stuffs
Recently Published
ISO 5183-1:2026
International Standard
Resistance welding equipment — Electrode adaptors, male taper 1:10 — Part 1: Conical fixing, taper 1:10
ISO 21384-3:2026
International Standard
Uncrewed aircraft systems — Part 3: Operational procedures
ISO 10993-3:2026
International Standard
Biological evaluation of medical devices — Part 3: Evaluation of genotoxicity, carcinogenicity, reproductive toxicity and developmental toxicity
ISO/IEC 30178:2026
International Standard
Internet of Things (IoT) — Data format, value and coding for interoperability
