GB/T 12157-2007
Water for industrial circulating cooling system and boiler.Determination of dissolved oxygen (English Version)

Standard No.

GB/T 12157-2007

Language

Chinese, Available in English version

Release Date

2007

Published By

General Administration of Quality Supervision, Inspection and Quarantine of the People‘s Republic of China

Status

Be replaced 2022-10

Replace By

GB/T 12157-2022

Latest

GB/T 12157-2022

Replace

GB/T 15455-1995 GB/T 12157-1989

Scope

This standard specifies the determination method of dissolved oxygen concentration in industrial circulating cooling water, boiler feed water and condensate water. The iodometric method in this standard is suitable for the determination of dissolved oxygen in industrial circulating cooling water with a mass concentration of 0.2 mg/L to 8 mg/L (calculated as O_{>2); the internal electrolysis method is suitable for boiler feed water and condensed water. Determination of oxygen mass concentration from 2 μg/L to 100 μg/L (calculated as O2).}

GB/T 12157-2007 Referenced Document

• GB/T 601 Chemical reagent.Preparations of reference titration solutions*， 2016-10-13 Update
• GB/T 603 Preparation of preparations and products used in chemical reagent test methods*， 2023-08-06 Update
• GB/T 6682 Water for analytical laboratory use.Specification and test methods*， 2008-05-15 Update

GB/T 12157-2007 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

GB/T 12157-2007 Water for industrial circulating cooling system and boiler.Determination of dissolved oxygen has been changed from GB/T 15455-1995 Industrial circulating cooling water Determination of dissolved oxygen.