UNLIMITED FREE ACCESS TO THE WORLD'S BEST IDEAS

close
Already an Engineering360 user? Log in.

This is embarrasing...

An error occurred while processing the form. Please try again in a few minutes.

Customize Your Engineering360 Experience

close
Privacy Policy

This is embarrasing...

An error occurred while processing the form. Please try again in a few minutes.

ASTM International - ASTM D7440-08(2015)e1

Standard Practice for Characterizing Uncertainty in Air Quality Measurements

active
Buy Now
Organization: ASTM International
Publication Date: 1 July 2015
Status: active
Page Count: 14
ICS Code (Ambient atmospheres): 13.040.20
significance And Use:

6.1 A primary use intended for this practice is for qualifying ASTM International Standards as Standard Test Methods. In the past, a "Precision and Bias" report has been required. However,... View More

scope:

1.1 This practice is for assisting developers and users of air quality methods for sampling concentrations of both airborne and settled materials in characterizing measurements as to uncertainty. Where possible, analysis into uncertainty components as recommended in the ISO Guide to the Expression of Uncertainty in Measurement (ISO GUM, (1)2) is suggested. Aspects of uncertainty estimation particular to air quality measurement are emphasized. For example, air quality assessment is often complicated by: the difficulty of taking replicate measurements owing to the large spatio-temporal variation in concentration values to be measured; systematic error or bias, both corrected and uncorrected; and the (rare) non-normal distribution of errors. This practice operates mainly through example. Background and mathematical development are relegated to appendices for optional reading.

1.2 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.

Document History

ASTM D7440-08(2015)e1
July 1, 2015
Standard Practice for Characterizing Uncertainty in Air Quality Measurements
6.1 A primary use intended for this practice is for qualifying ASTM International Standards as Standard Test Methods. In the past, a “Precision and Bias” report has been required. However, recently a...
April 1, 2008
Standard Practice for Characterizing Uncertainty in Air Quality Measurements
A primary use intended for this practice is for qualifying ASTM International Standards as Standard Test Methods. In the past, a “Precision and Bias” report has been required. However, recently a...
Advertisement