Document Center is acquired by Nimonik

Scope

1.1 This guide covers two procedures for establishing the permeation rate of a permeation tube and defining the uncertainty of the rate by comparison to National Institute of Standards and Technology's Standard Reference Materials (SRM).

1.2 Procedure A consists of a direct comparison of the permeation rate of the device undergoing calibration with that of an SRM.

1.3 Procedure B consists of a gravimetric calibration process in which a certified permeation tube is used as a quality control for the measurements.

1.4 Both procedures are limited to the case where a suitable certified permeation device is available.

1.5 This standard does not purport to address all of the safety concerns, if any, associated with its use. It is the responsibility of the user of this standard to establish appropriate safety and health practices and determine the applicability of regulatory limitations prior to use. (See on Safety Precautions.)

Significance and Use

The accuracy of air pollution measurements is directly dependent upon accurate calibrations.

Such measurements gain accuracy and can be intercompared when the measurement procedures are traceable to national measurement standards.

This guide describes procedures for enhancing the accuracy of air pollution measurements which may be specified by those organizations requiring traceability to national standards.

Keywords

intercomparison; permeation tube; standard reference material; traceability

To find similar documents by ASTM Volume:

11.07 (Atmospheric Analysis)

To find similar documents by classification:

17.020 (Metrology and measurement in general Including measuring instruments in general, preferred numbers, standard measures, general aspects of reference materials, etc. Quantities and units, see 01.060 Chemical reference materials, see 71.040.30)

This document comes with our free Notification Service, good for the life of the document.

This document is available in either Paper or PDF format.