Standard Practice for Calibration Techniques Using Permeation Tubes

Importancia y uso:

5.1 Most analytical methods used in air pollutant measurements are comparative in nature and require calibration or standardization, or both, often with known blends of the gas of interest. Since many of the important air pollutants are reactive and unstable, it is difficult to store them as standard mixtures of known concentration for extended calibration purposes. An alternative is to prepare dynamically standard blends as required. This procedure is simplified if a constant source of the gas of interest can be provided. Permeation tubes provide this constant source, if properly calibrated and if maintained at constant temperature. Permeation tubes have been specified as reference calibration sources, for certain analytical procedures, by the Environmental Protection Agency (3).

Subcomité:

D22.01

Referida por:

D3608-19, D3266-91R18, D3249-95R19, D7165-22, D8455-22, D2913-20, D6021-22, D4084-23, D2914-15R22, B0827-05R20, D4298-22, D7166-23, D4298-22, D3824-20, D5303-20, D1607-91R18E01, D4323-21, D4084-23, D6228-19, D4084-23, D5504-20, D7800_D7800M-23, D7493-22, D5303-20, D6228-19, D6228-19, D5504-20, D6228-19, D5504-20, D5116-17, D5504-20

Volúmen:

11.07

Número ICS:

17.020 (Metrology and measurement in general)

Palabras clave:

analyzers; butane permeation tubes; calibration; CL2 permeation tubes; gas permeable tubes; H2S permeation tubes; NH3 permeation tubes; NO2 permeation tubes; propane permeation tubes; SO2 permeation tubes ;