• ASTM D7440-08(2015)e1

ASTM D7440-08(2015)e1

Standard Practice for Characterizing Uncertainty in Air Quality Measurements

ASTM International, 07/01/2015

Publisher: ASTM

File Format: PDF

$41.00$83.00


Published:01/07/2015

Pages:14

File Size:1 file , 250 KB

Note:This product is unavailable in Russia, Ukraine, Belarus

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.

More ASTM standard pdf

ASTM F1239-94

ASTM F1239-94

Standard Test Methods for Oxygen Precipitation Characterization of Silicon Wafers by Measurement of Interstitial Oxygen Reduction

$31.00 $62.00

ASTM F2149-16

ASTM F2149-16

Standard Test Method for Automated Analyses of Cells - the Electrical Sensing Zone Method of Enumerating and Sizing Single Cell Suspensions

$21.00 $42.00

ASTM D460-91(1997)

ASTM D460-91(1997)

Standard Test Methods for Sampling and Chemical Analysis of Soaps and Soap Products

$32.00 $65.00

ASTM D5873-05

ASTM D5873-05

Standard Test Method for Determination of Rock Hardness by Rebound Hammer Method

$26.00 $52.00