Skip to main content
Back

ISO Guide 33:2015

Reference materials -- Good practice in using reference materials

General information

Withdrawn from 03.06.2024
Directives or regulations
None

Standard history

Status
Date
Type
Name
03.06.2024
Main
05.02.2015
Main
Main
ISO Guide 32:1997
Main
ISO Guide 33:2000
ISO Guide 33:2015 describes good practice in using reference materials (RMs), and certified reference materials (CRMs) in particular, in measurement processes. These uses include the assessment of precision and trueness of measurement methods, quality control, assigning values to materials, calibration, and the establishment of conventional scales. This Guide also relates key characteristics of various types of RMs to the different applications.
For CRMs, the metrological traceability of the property values to international scales or other measurement standards has been established. For RMs not being CRMs, this kind of traceability of property values has often not been established. Nevertheless, these RMs can still be used for assessing parts of measurement procedures, including evaluating various levels of precision
Mainstream applications of RM include precision control, bias assessment, calibration, preparation of calibration RMs and maintaining conventional scales.
NOTE     Not all types of RMs can be used for all indicated purposes.
The preparation of RMs for calibration is also part of the scope of ISO Guides 34 and 35. The treatment in this Guide is limited to the fundamentals of small-scale preparation of RMs and the value assignment, as used by laboratories to calibrate their equipment. Larger scale production of such RMs, with the possible aim of distribution is beyond the scope of this Guide. This type of activity is covered in ISO Guides 34 and 35.
The development of working standards, as used in, e.g. natural gas analysis, clinical chemistry, and the pharmaceutical industry is not covered in this Guide. This type of activity is covered in ISO Guides 34 and 35.

Required fields are indicated with *

*
*
*
PDF
82.61 € incl tax
Paper
82.61 € incl tax
Standard monitoring

Customers who bought this item also bought

Main

ISO Guide 31:2015

Reference materials -- Contents of certificates, labels and accompanying documentation
Withdrawn from 17.01.2024
Main

ISO 21748:2017

Guidance for the use of repeatability, reproducibility and trueness estimates in measurement uncertainty evaluation
Newest version Valid from 24.04.2017
Main

EVS-EN ISO 19011:2018

Guidelines for auditing management systems (ISO 19011:2018)
Newest version Valid from 16.08.2018
Main

ISO Guide 35:2017

Reference materials -- Guidance for characterization and assessment of homogeneity and stability
Withdrawn from 03.05.2024