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  1. Accreditation and Quality Assurance
  2. Accreditation and Quality Assurance : Volume 9
  3. Accreditation and Quality Assurance : Volume 9, Issue 10, September 2004
  4. Uses and abuses of PT
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Accreditation and Quality Assurance : Volume 22
Accreditation and Quality Assurance : Volume 21
Accreditation and Quality Assurance : Volume 20
Accreditation and Quality Assurance : Volume 19
Accreditation and Quality Assurance : Volume 18
Accreditation and Quality Assurance : Volume 17
Accreditation and Quality Assurance : Volume 16
Accreditation and Quality Assurance : Volume 15
Accreditation and Quality Assurance : Volume 14
Accreditation and Quality Assurance : Volume 13
Accreditation and Quality Assurance : Volume 12
Accreditation and Quality Assurance : Volume 11
Accreditation and Quality Assurance : Volume 10
Accreditation and Quality Assurance : Volume 9
Accreditation and Quality Assurance : Volume 9, Issue 11-12, October 2004
Accreditation and Quality Assurance : Volume 9, Issue 10, September 2004
Target measurement uncertainties I: are they coming?
A priori evaluation of the adequacy of reference materials
Correlation between repeated measurements: bane and boon of the GUM approach to the uncertainty of measurement
Developments in external quality assessment for clinical microbiology laboratories
The uncertainty in the calculation of the amount of blocked and reactive lysine in milk products, as determined by the furosine method
International Measurement Evaluation Programme (IMEP); IMEP-14: Picturing the performance of analytical laboratories measuring trace elements in sediment
Sieving of sediments for subsequent analysis of metal pollution: results of a German interlaboratory study
Measurement uncertainty in water microbiology may not estimate the laboratory’s precision
Uses and abuses of PT
Proficiency testing in analytical chemistry, microbiology and laboratory medicine: working group discussions on current practice and future directions
Measurement uncertainties and specified limits: what is logical or common sense in chemical measurements?
Protometrology
Re-inventing the wheel?
Calendar of Events 9/2004
Accreditation and Quality Assurance : Volume 9, Issue 9, August 2004
Accreditation and Quality Assurance : Volume 9, Issue 8, July 2004
Accreditation and Quality Assurance : Volume 9, Issue 7, June 2004
Accreditation and Quality Assurance : Volume 9, Issue 6, June 2004
Accreditation and Quality Assurance : Volume 9, Issue 4-5, March 2004
Accreditation and Quality Assurance : Volume 9, Issue 3, February 2004
Accreditation and Quality Assurance : Volume 9, Issue 1-2, January 2004
Accreditation and Quality Assurance : Volume 8
Accreditation and Quality Assurance : Volume 7
Accreditation and Quality Assurance : Volume 6
Accreditation and Quality Assurance : Volume 5
Accreditation and Quality Assurance : Volume 4
Accreditation and Quality Assurance : Volume 3
Accreditation and Quality Assurance : Volume 2

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Uses and abuses of PT

Content Provider Springer Nature Link
Author Boley, Nick
Copyright Year 2004
Abstract Proficiency testing (PT) is a very valuable quality tool for laboratories making all kinds of analytical measurements, in chemistry, microbiology and laboratory medicine. Compared with other quality tools, which are largely concerned with INPUTS (e.g. staff training, calibration, documentation), PT is concerned with OUTPUTS (i.e. the actual results produced by the laboratory). The quality of routine measurements and results, which would normally be reported to customers, both internal and external, should be demonstrated. This is a major reason for many laboratories participating in PT, even if they are not accredited, or use very few, if any, other quality tools. This is important, for it enables the laboratory manager to measure the efficacy of the overall quality system, and to determine if the inputs to this are appropriate. This should be done in a spirit of learning—it was discussed at the previous workshop whether PT schemes are “teachers” or “policemen”, and the consensus was that MOST are teachers (or at least try to be). Learning from mistakes, investigating problems, implementing corrective actions and then observing whether thisis successful in the next PT represents what many in our profession would regard as a proper and effective use of PT. Although this may be the intended primary use of PT by laboratories, we must not forget that PT has other valid uses. In particular, the use of PT to demonstrate competence to third parties—accreditation bodies, regulators, and customers—has become more important in the last few years. However, this development, however valuable, can lead to abuse of PT scheme data. This paper will highlight briefly some examples of both proper use and abuse of PT. These are taken from my experience with PT schemes over many years.
Starting Page 633
Ending Page 634
Page Count 2
File Format PDF
ISSN 09491775
Journal Accreditation and Quality Assurance
Volume Number 9
Issue Number 10
e-ISSN 14320517
Language English
Publisher Springer-Verlag
Publisher Date 2004-08-04
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
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