Astm D 3670 – 91 (Reapproved 2001) pdf free download

Standard Guide for
Determination of Precision and Bias of Methods of
Committee D221

This standard is issued under the fixed designation D 3670; the number immediately following the designation indicates the year of
original adoption or, in the case of revision, the year of the last revision. A number in parentheses indicates the year of last reapproval. A
superscript epsilon (e) indicates an editorial change since the last revision or reapproval.

1. Scope

1.1 This standard provides guidance to task groups of
Committee D22 on Sampling and Analysis of Atmospheres in
planning and conducting collaborative testing of candidate

1.2 It is intended for use with other ASTM practices for the
determination of precision and bias.

1.3 It is applicable to most manual and automated methods
and to most components of monitoring systems. It is recognized that the evaluation of monitoring systems may provide
special problems. Practice D 3249 should be considered for
general guidance in this respect.

1.4 It is directly applicable to chemical methods and in
principle to most physical methods, sampling methods, and
calibration procedures.

1.5 The processes described are for the general validation of
methods of test. A user has the obligation and responsibility to
validate any method it uses for a specific application and to
demonstrate its own competence in the use of validated

2. Referenced Documents

2.1 ASTM Standards:
D 2777 Practice for Determination of Precision and Bias of
Applicable Test Methods of Committee D19 on Water2
D 3249 Practice for General Ambient Air Analyzer Procedures3
E 177 Practice for Use of the Terms Precision and Bias in
ASTM Test Methods4
E 180 Practice for Determining the Precision of ASTM
Methods for Analysis and Testing of Industrial and Specialty Chemicals5
E 691 Practice for Conducting an Interlaboratory Study to

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