GB/T 12157-2022
Determination of dissolved oxygen in water for industrial circulating cooling system and boiler (English Version)

Standard No.

GB/T 12157-2022

Language

Chinese, Available in English version

Release Date

2022

Published By

国家市场监督管理总局、中国国家标准化管理委员会

Latest

GB/T 12157-2022

Replace

GB/T 12157-2007

Scope

This document describes the method for the determination of dissolved oxygen in industrial circulating cooling water, boiler feed water, and condensate water. The iodometric method in this document is suitable for industrial circulating cooling water with a mass concentration of dissolved oxygen of 0.2 mg/L~8 mg/L (calculated as O2).

GB/T 12157-2022 Referenced Document

• GB/T 601 Chemical reagent.Preparations of reference titration solutions
• GB/T 603 Preparation of preparations and products used in chemical reagent test methods*， 2023-08-06 Update
• GB/T 6682-2008 Water for analytical laboratory use.Specification and test methods

GB/T 12157-2022 history

• 2022 GB/T 12157-2022 Determination of dissolved oxygen in water for industrial circulating cooling system and boiler
• 2007 GB/T 12157-2007 Water for industrial circulating cooling system and boiler.Determination of dissolved oxygen
• 1989 GB/T 12157-1989 Analysis of water used in boiler and cooling system--Determination for dissolved oxygen--Internal electrolysis