GB/T 5275.8-2014 Active National standards

GB/T 5275.8-2014 Gas analysis—Preparation of calibration gas mixtures using dynamic volumetric methods—Part 8:Diffusion method

GB/T 5275.8-2014 Gas analysis—Preparation of calibration gas mixtures using dynamic volumetric methods—Part 8:Diffusion method

Publish Date: 2014-07-08 Implement Date: 2014-12-01 For services related to genuine standard inquiry, procurement, translation, and other related services in China, please Contact Us

Basic Information

Standard Code: GB/T 5275.8-2014

Standard Type: National standards

Standard Status: Active

is_force_gb: no

CCS Name: Industrial gases and chemical gases

ICS Name: Chemical analysis

Publish Date: 2014-07-08

Implement Date: 2014-12-01

Pages: 17 pages

Scope

This section specifies the dynamic method for preparing calibration gas mixtures with a molar fraction in the range of 10-9 to 10-3. The relative expanded uncertainty of this method, U, which does not exceed ±2%, is obtained by multiplying the synthetic standard uncertainty by the inclusion factor (k=2).
If the pipeline between the diffusion source and the use location is short, the diffusion method can be used to prepare low-concentration calibration gas mixtures of liquid organic components at room temperature with a boiling point in the range of 40°C to 160°C.
The diffusion method specified in this section is not only suitable for preparing calibration gas mixtures of various hydrocarbons with concentrations comparable to those in the atmospheric environment and indoor air, but also for preparing low-concentration water gas mixtures.

Development Information

Word Count: 28 Thousand words Pages: 17 pages

Same series standard

GB/T 5275.1-2014 Gas analysis—Preparation of calibration gas mixtures using dynamic volumetric methods—Part 1:Methods of calibration GB/T 5275.2-2014 Gas analysis—Preparation of calibration gas mixtures using dynamic volumetric methods—Part 2:Volumetric pumps GB/T 5275.4-2014 Gas analysis—Preparation of calibration gas mixtures using dynamic volumetric methods—Part 4:Continuous syringe injection method GB/T 5275.5-2014 Gas analysis—Preparation of calibration gas mixtures using dynamic volumetric methods—Part 5:Capillary calibration devices GB/T 5275.6-2014 Gas analysis—Preparation of calibration gas mixtures using dynamic volumetric methods—Part 6:Gritical orifices GB/T 5275.7-2014 Gas analysis—Preparation of calibration gas mixtures using dynamic volumetric methods—Part 7:Thermal mass-flow controllers GB/T 5275.9-2014 Gas analysis—Preparation of calibration gas mixtures using dynamic volumetric methods—Part 9:Saturation method GB/T 5275.11-2014 Gas analysis—Preparation of calibration gas mixtures using dynamic volumetric methods—Part 11:Electrochemical generation

Referenced Standards

ISO 6145-7

Adopt standards

ISO 6145-8:2005

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