DIN 38402-45:2003-04

Superseded

GERMAN STANDARD METHODS FOR THE EXAMINATION OF WATER, WASTE WATER AND SLUDGE - GENERAL INFORMATION (GROUP A) - PART 45: LABORATORY PROFICIENCY TESTING BY INTERLABORATORY COMPARISONS (A 45)

Available format(s)

Hardcopy , PDF

Superseded date

03-07-2021

Language(s)

English

Published date

01-01-2003

Publisher

German Institute for Standardisation (Deutsches Institut für Normung)

Foreword
Introduction
1 Scope
2 Normative references
3 Concepts
4 Symbols
5 Designation
6 Requirements relating to proficiency testing scheme
   6.1 Coordinating body
   6.2 Testing laboratory
   6.3 Coordinator
   6.4 Other staff
   6.5 Confidentiality
   6.6 Equipment
   6.7 Documentation of quality system
   6.8 Advisory group
7 Requirements relating to test participants
8 Design of proficiency test
   8.1 Test specification
   8.2 Sample selection
   8.3 Parameter selection
   8.4 Spiking
   8.5 Number of participants
   8.6 Number of samples
   8.7 Replicate measurements and sample size
9 Procedure
   9.1 General
   9.2 Sample preparation
   9.3 Stability and homogeneity testing
   9.4 Prevention of collusion between participants
   9.5 Analytical methods
   9.6 Specification of conventional true value
   9.7 Sample distribution
   9.8 Communication with participants
10 Evaluation of interlaboratory tests
   10.1 General requirements
   10.2 General statistical evaluation procedure
   10.3 Robust analysis
   10.4 Variance function
   10.5 z-scores
11 Expression of results
12 Archiving and managing the results
Annex A Example elucidating the principle behind the
        Q-method of estimation
Annex B Example of evaluation in accordance with clause 10
Annex C Example of calculating the variance function
Explanatory notes
Bibliography

Gives the criteria relating to proficiency testing by interlaboratory comparisons.

DevelopmentNote	Suspended until publication of a revised English text, due to a new German edition. (06/2014)
DocumentType	Standard
Pages	20
PublisherName	German Institute for Standardisation (Deutsches Institut für Normung)
Status	Superseded

ISO 5725-1:1994	Accuracy (trueness and precision) of measurement methods and results — Part 1: General principles and definitions
DIN 38402-41:1984-05	GERMAN STANDARD METHODS FOR THE EXAMINATION OF WATER, WASTE WATER AND SLUDGE; GENERAL INFORMATION (GROUP A): INTER-LABORATORY TESTS; PLANNING AND ORGANIZATION (A 41)
DIN V 55394-2:2000-09	PROFICIENCY TESTING BY INTERLABORATORY COMPARISONS - PART 2: SELECTION AND USE OF PROFICIENCY TESTING SCHEMES BY LABORATORY ACCREDITATION BODIES
DIN 38402-42:1984-05	GERMAN STANDARD METHODS FOR THE EXAMINATION OF WATER, WASTE WATER AND SLUDGE; GENERAL INFORMATION (GROUP A); EVALUATION OF INTER-LABORATORY TESTS (A 42)
ISO 5725-2:1994	Accuracy (trueness and precision) of measurement methods and results Part 2: Basic method for the determination of repeatability and reproducibility of a standard measurement method
DIN V 55394-1:2000-09	PROFICIENCY TESTING BY INTERLABORATORY COMPARISONS - PART 1: DEVELOPMENT AND OPERATION OF PROFICIENCY TESTING SCHEMES
ISO 3534-1:2006	Statistics — Vocabulary and symbols — Part 1: General statistical terms and terms used in probability