Standard
Track updates
AS/NZS ISO 33403:2024
[Current]Reference materials - Requirements and recommendations for use
AS/NZS ISO 33403:2024 identically adopts ISO 33403:2024 which describes good practice in using reference materials (RMs), and certified reference materials (CRMs) in particular, in measurement processes. These uses include measurement methods assessment, quality control, assigning values to materials, calibration, and establishing conventional scales. This document also relates key characteristics of various types of RMs to the different applications.
Published: 11/10/2024
Pages: 28
Table of contents
Cited references
Content history
Table of contents
Header
About this publication
Preface
Foreword
Introduction
1 Scope
2 Normative references
3 Terms and definitions
4 Symbols
5 Conventions
6 RMs and their role in measurement
6.1 Common applications of RMs
6.1.1
6.1.2
6.1.3
6.1.4
6.2 Property values
6.2.1 General
6.2.1.1
6.2.1.2
6.2.2 Specification of the property
6.2.2.1
6.2.2.2
6.3 Uncertainty statement
6.3.1
6.3.2
6.3.3
6.3.4
6.3.5
6.3.6
6.3.7
6.4 Traceability statement
6.4.1
6.4.2
6.4.3
6.4.4
6.4.5
7 Handling of RMs and CRMs
7.1
7.2
7.3
7.4
7.5
8 Assessment of precision
8.1 General
8.1.1
8.1.2
8.1.3
8.2 Number of replicate measurements
8.2.1
8.2.2
8.3 Requirements with respect to the RM
8.3.1
8.3.2
8.3.3
8.3.4
8.4 Measurement
8.4.1
8.4.2
8.5 Data treatment
8.5.1
8.5.2
8.6 Calculation and assessment of precision
8.6.1
8.6.2
9 Bias assessment
9.1 General
9.1.1
9.1.2
9.1.3
9.2 Approach to bias checking
9.2.1
9.2.2
9.2.3
9.2.4
9.2.5
9.3 Utilizing bias data
9.3.1
9.3.2
9.3.3
9.3.4
9.3.5
9.3.6
10 Calibration
10.1 General
10.1.1
10.1.2
10.1.3
10.1.4
10.2 Practical considerations for calibration
10.2.1
10.2.2
10.3 Calibration models
10.3.1
10.3.2
10.3.3
10.3.4
10.3.5
10.3.6
11 Assigning values to other materials
11.1 General
11.1.1
11.1.2
11.1.3
11.1.4
11.2 Pure substances
11.2.1
11.2.2
11.2.3
11.2.4
11.3 Preparation of calibrants
11.3.1
11.3.2
11.3.3
12 Conventional scales
12.1
12.2
12.3
12.4
12.5
12.6
13 Selection of RMs and CRMs
13.1 General
13.1.1
13.1.2
13.1.3
13.1.4
13.1.5
13.2 Selection of a CRM
13.2.1
13.2.2
13.2.3
13.3 Selection of RMs
13.3.1
13.3.2
13.4 Relevance to the measurement system
Annex A
A.1 Single point calibration
A.1.1
A.1.2
A.2 Bracketing
A.2.1
A.2.2
A.3 Multipoint calibration
A.3.1
A.3.2
A.3.3
A.3.4
A.4 Standard addition
Annex B
Annex C
C.1 pH-scale
C.1.1
C.1.2
Bibliography
Cited references in this standard