NDLI: Uncertainty of sampling in chemical analysis

Content Provider	Springer Nature Link
Author	Thompson, M.
Copyright Year	1998
Abstract	Uncertainty of sampling is the contribution from sampling errors to the combined uncertainty associated with an analytical measurement when the measurand is the concentration of the analyte in the 'target', the total bulk of material that the sample is meant to represent. Of the errors considered to contribute to uncertainty, random errors of sampling, characterised by precision, are much more accessible to investigation than those due to bias. Where an approximation to random sampling can be achieved, realistic precisions can normally be estimated. In some instances reproducibility precision is significantly greater than repeatability precision, and the contribution of between-sampler variations to sampling uncertainty must be acknowledged. However, the collaborative trial of a sampling method is an expensive and difficult exercise to execute. A system of internal quality control for routine sampling can be introduced. Fitness for purpose has been defined in terms of the required combined uncertainty of sampling and analysis.
Starting Page	117
Ending Page	121
Page Count	5
File Format	PDF
ISSN	09491775
Journal	Accreditation and Quality Assurance
Volume Number	3
Issue Number	3
e-ISSN	14320517
Language	English
Publisher	Springer-Verlag
Publisher Date	1998-03-12
Publisher Place	Berlin, Heidelberg
Access Restriction	One Nation One Subscription (ONOS)
Content Type	Text
Resource Type	Article
Subject	Chemistry Instrumentation Chemical Engineering Safety, Risk, Reliability and Quality

Sl.	Authority	Responsibilities	Communication Details
1	Ministry of Education (GoI), Department of Higher Education	Sanctioning Authority	https://www.education.gov.in/ict-initiatives
2	Indian Institute of Technology Kharagpur	Host Institute of the Project: The host institute of the project is responsible for providing infrastructure support and hosting the project	https://www.iitkgp.ac.in
3	National Digital Library of India Office, Indian Institute of Technology Kharagpur	The administrative and infrastructural headquarters of the project	Dr. B. Sutradhar bsutra@ndl.gov.in
4	Project PI / Joint PI	Principal Investigator and Joint Principal Investigators of the project	Dr. B. Sutradhar bsutra@ndl.gov.in Prof. Saswat Chakrabarti will be added soon
5	Website/Portal (Helpdesk)	Queries regarding NDLI and its services	support@ndl.gov.in
6	Contents and Copyright Issues	Queries related to content curation and copyright issues	content@ndl.gov.in
7	National Digital Library of India Club (NDLI Club)	Queries related to NDLI Club formation, support, user awareness program, seminar/symposium, collaboration, social media, promotion, and outreach	clubsupport@ndl.gov.in
8	Digital Preservation Centre (DPC)	Assistance with digitizing and archiving copyright-free printed books	dpc@ndl.gov.in
9	IDR Setup or Support	Queries related to establishment and support of Institutional Digital Repository (IDR) and IDR workshops	idr@ndl.gov.in

Uncertainty and sampling

Sampling and metrology

Introduction to measurement uncertainty in chemical analysis

Compliance with legal requirements: definition of limits, sampling and measurement uncertainty

Appropriate rather than representative sampling, based on acceptable levels of uncertainty

Sampling and uncertainty — Reply to the letters [1,2] to the editor

2nd EURACHEM Workshop on Measurement Uncertainty in Chemical Analysis

Uncertainty from sampling: workshop to launch a Nordtest handbook on sampling uncertainty estimation and control

Correction to: Combined uncertainty factor for sampling and analysis

Uncertainty of sampling in chemical analysis

Similar Documents

Uncertainty and sampling

Sampling and metrology

Introduction to measurement uncertainty in chemical analysis

Compliance with legal requirements: definition of limits, sampling and measurement uncertainty

Appropriate rather than representative sampling, based on acceptable levels of uncertainty

Sampling and uncertainty — Reply to the letters [1,2] to the editor

2nd EURACHEM Workshop on Measurement Uncertainty in Chemical Analysis

Uncertainty from sampling: workshop to launch a Nordtest handbook on sampling uncertainty estimation and control

Correction to: Combined uncertainty factor for sampling and analysis

Uncertainty of sampling in chemical analysis