GB/T 12157-2007 Replaced National standards

GB/T 12157-2007 Water for industrial circulating cooling system and boiler—Determination of dissolved oxygen

GB/T 12157-2007 Water for industrial circulating cooling system and boiler—Determination of dissolved oxygen

Publish Date: 2007-08-13 Implement Date: 2008-02-01 For services related to genuine standard inquiry, procurement, translation, and other related services in China, please Contact Us

Basic Information

Standard Code: GB/T 12157-2007

Standard Type: National standards

Standard Status: Replaced

is_force_gb: no

CCS Name: Basic standards and general methods for water treatment agents

ICS Name: Chemical analysis

Publish Date: 2007-08-13

Implement Date: 2008-02-01

Pages: 8 pages

Scope

This standard specifies the method for determining the concentration of dissolved oxygen in industrial circulating cooling water, boiler feedwater, and condensate water. In this standard, the iodine method is applicable to the determination of the mass concentration of dissolved oxygen in industrial circulating cooling water ranging from 0.2 mg/L to 8 mg/L (calculated as O2); and the internal electrolysis method is applicable to the determination of the mass concentration of dissolved oxygen in boiler feedwater and condensate water ranging from 2 μg/L to 100 μg/L (calculated as O2).

Development Information

Word Count: 12 Thousand words Pages: 8 pages

Replace the following standards

GB/T 12157-1989 GB/T 15455-1995 Industrial circulating cooling water—Determination of dissolved oxygen—Iodimetry

Superseded by the following standards

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

Referenced Standards

GB/T 601-2002 Chemical reagent Preparations of standard volumetric solutions GB/T 601-2016 Chemical reagent—Preparations of reference titration solutions GB/T 603-2002 Chemical reagent—Preparations of reagent solutions for use in test methods GB/T 603-2023 Chemical reagent—Preparations of reagent solutions for use in test methods GB/T 6682-1992 Water for analytical laboratory use—Specification and test methods GB/T 6682-2008 Water for analytical laboratory use—Specification and test methods

Adopt standards

ISO 5813:1983

Related Standards

GB/T 3143-1982 Active

GB/T 3143-1982 Color determination method of liquid chemicals (Hazen unit—platinum-cobalt scale)

Publish Date: 1982-07-20

GB/T 4472-1984 Replaced

GB/T 4472-1984 General rule for determination of density and relative density for chemical products

Publish Date: 1984-06-05

GB/T 4946-1985 Replaced

GB/T 4946-1985 Terms of gas chromatography

Publish Date: 1985-02-28

GB/T 5274-1985 Replaced

GB/T 5274-1985 Gas analysis—Preparation of calibration gas mixtures—Weighing methods

Publish Date: 1985-08-01

GB/T 5831-1986 Replaced

GB/T 5831-1986 Determination of trace oxygen in the gases—Colorimetric method

Publish Date: 1986-01-27

GB/T 5832.2-1986 Replaced

GB/T 5832.2-1986 Determination of trace water in the gases—Dew point method

Publish Date: 1986-01-27