Knowledge Gateway
Unlock your learning potential with industry insights and standards that matter. Share your email to begin.
Unlock your learning potential with industry insights and standards that matter. Share your email to begin.
Status : Active
Standard Type : Main
Document No : ISO 11843-7:2025
Document Year : 2025
Pages : 16
Edition : 3
Section Volume : Measurement methods and results (ISO/TC 69/SC 6.)
This document specifies the practical use of the fundamental concepts in ISO 11843 in case of the background noise predominance in instrumental analysis.
This document specifies basic methods to
— extract the stochastic properties of the background noise,
— use the stochastic properties to estimate the SD or CV of the response variable, and
— calculate the minimum detectable value based on the SD or CV obtained above.
The methods described in this document are useful for checking the detection of a certain substance by various types of measurement equipment in which the background noise of the instrumental output predominates over the other sources of measurement uncertainty. Feasible choices are visible and ultraviolet absorption spectrometry, atomic absorption spectrometry, atomic fluorescence spectrometry, luminescence spectrometry, liquid chromatography and gas chromatography.