ISO 11843-1-1997 PDF

Full title and description

St ISO 11843-1:1997 — Capability of detection — Part 1: Terms and definitions. Defines the vocabulary and core concepts used in the ISO 11843 series for assessing the capability of detection of measurement methods, including terms such as response variable, net state variable, critical value and minimum detectable value.

Abstract

This part of ISO 11843 provides the standardized terms and definitions required to describe and apply statistical methods for assessing the capability of detection of measurement procedures. It lays out the basic concepts and decision thresholds used throughout the ISO 11843 series so that subsequent parts can specify methodological procedures consistently.

General information

• Status: Published (international standard; confirmed and subject to periodic review).
• Publication date: 1997-07 (Edition 1, 1997).
• Publisher: International Organization for Standardization (ISO).
• ICS / categories: 17.020; 01.040.03; 03.120.30 (metrology/measurement and application of statistical methods).
• Edition / version: Edition 1 (1997); corrigendum ISO 11843-1:1997/Cor 1:2003 issued later.
• Number of pages: 10 pages (main document).

Scope

ISO 11843-1:1997 specifies the terminology and fundamental definitions used to assess whether a measurement method can reliably detect a specified state or quantity (the "capability of detection"). It is intended to be used in conjunction with the other parts of ISO 11843 that give detailed methodologies for calculating critical values and minimum detectable values under different measurement models and experimental designs.

Key topics and requirements

• Standardized definitions of response variable and net state variable (observable output vs true measurand).
• Definitions of critical value (decision threshold) and minimum detectable value (smallest net state reliably distinguished from background).
• Statistical basis for detection decisions (concepts of false positive/false negative risks used across the series).
• Relationship and interoperability with methodological parts of ISO 11843 (linear calibration, non-linear cases, no-calibration cases, comparison procedures, etc.).
• Reference to corrigendum correcting editorial/technical points (ISO 11843-1:1997/Cor 1:2003).

Typical use and users

Used by metrology and testing laboratories, instrument manufacturers, statisticians, quality managers and regulatory authorities who need a common vocabulary for expressing detection capability. Typical applications include environmental analysis, chemical assays, clinical/biomedical testing, instrument performance evaluation and interlaboratory studies where detection limits and decision thresholds must be reported or compared.

Related standards

ISO 11843 is a multi-part series. Relevant parts include ISO 11843-2:2000 (methodology in the linear calibration case), ISO 11843-3:2003 (critical value determination when no calibration data are used), ISO 11843-4:2003 (comparing minimum detectable value with a given value), ISO 11843-5:2008 (linear and non-linear calibration cases) and more recent parts addressing Poisson or instrumental-noise-based methods (parts 6 and 7 as developed/updated by the technical committee). The 1997 Part 1 text and its 2003 corrigendum remain the definitional basis for these methodological parts.

Keywords

capability of detection; critical value; minimum detectable value; response variable; net state variable; detection limit; decision threshold; statistical methods; calibration; measurement uncertainty.

FAQ

Q: What is this standard?

A: ISO 11843-1:1997 is Part 1 of the ISO 11843 series and provides the official terms and definitions used to describe the capability of detection of measurement methods. It establishes the vocabulary used throughout the series.

Q: What does it cover?

A: It covers definitions (for example, response variable, net state variable, critical value and minimum detectable value) and the conceptual/statistical framework that other parts of ISO 11843 use to specify procedures for estimating detection capability under different experimental and calibration conditions.

Q: Who typically uses it?

A: Metrology and testing laboratories, statisticians, instrument manufacturers, quality and regulatory specialists who need consistent terminology when reporting and comparing detection performance across methods and studies.

Q: Is it current or superseded?

A: The 1997 edition (with corrigendum 2003) is the published Part 1 text. ISO records show the edition as published in 1997, confirmed in reviews since then; committee work to revise Part 1 has been recorded (drafts for revision), so purchasers should check the ISO catalogue or national body for any replacement edition or finalized revision.

Q: Is it part of a series?

A: Yes — ISO 11843 is a multi-part series. Part 1 defines terms; subsequent parts (for example Parts 2, 3, 4 and 5) specify methodologies for different calibration and experimental situations. Newer or updated parts (e.g., parts addressing Poisson-distributed measurements or instrumental-noise-based methods) extend the series as needed.

Q: What are the key keywords?

A: Critical value; minimum detectable value; capability of detection; response variable; net state variable; detection limit; calibration; statistical decision threshold.