GB/T 5275-2005
Gas analysis-Preparation of calibration gas mixtures-Permeation method (English Version)
- Standard No.
- GB/T 5275-2005
- Language
- Chinese, Available in English version
- Release Date
- 2005
- Published By
- General Administration of Quality Supervision, Inspection and Quarantine of the People‘s Republic of China
- Status
- 2010-02
- Replace By
- GB/T 5275.10-2009
- Latest
- GB/T 5275.10-2009
- Scope
- This standard specifies the method of preparing mixed gas for calibration using the principle of osmosis. It is a dynamic gas distribution method. Generally, the concentration range of the required components in the mixed gas is 10-9～10-5 (volume fraction), and the accuracy of the component concentration can reach 2% (in fact, the concentration unit is also It can be expressed in μg/m3). Since it is difficult to keep the concentration of the mixed gas stable in such a low concentration range, the mixed gas for calibration should be prepared immediately before use, and the pipeline for delivering the mixed gas should be as short as possible.
GB/T 5275-2005 history
- 2009 GB/T 5275.10-2009 Gas analysis.Preparation of calibration gas mixtures using dynamic volumetric methods.Part 10:Permeation method
- 2005 GB/T 5275-2005 Gas analysis-Preparation of calibration gas mixtures-Permeation method
- 1985 GB/T 5275-1985 Gas analysis--Preparation of calibration gas mixtures--Permeation methods
