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ISO 12745:2008

Current
Current

The latest, up-to-date edition.

Copper, lead and zinc ores and concentrates Precision and bias of mass measurement techniques
Available format(s)

Hardcopy , PDF , PDF 3 Users , PDF 5 Users , PDF 9 Users

Language(s)

English

Published date

09-29-2008

ISO 12745:2008 provides guidelines to test for bias over a wide range of mass measurement techniques, to estimate the precision for each technique and to calculate the precision for wet mass when estimated by applying one of those techniques.

The guidelines are based on the application of statistical tests to verify that a mass measurement technique is unbiased, to estimate the variance as the most basic measure for its precision and to check the linearity of a static scale over its working range. Calibration methods and performance tests for compliance with applicable regulations generate test results that can be used to quantify precision and bias for each of these mass measurement techniques and to verify linearity for static weighing devices.

The guidelines apply to mass measurement techniques used to estimate the wet mass for cargoes or shipments of mineral concentrate as the basis for freight and insurance charges and for preliminary payments or for final settlements between trading partners.

DevelopmentNote
Supersedes ISO/FDIS 12745. (10/2008)
DocumentType
Standard
Pages
47
PublisherName
International Organization for Standardization
Status
Current
Supersedes

Standards Relationship
AS ISO 12745:2016 Identical
BS ISO 12745:2008 Identical
SAC GB/T 30083 : 2013 Identical
NEN ISO 12745 : 2008 Identical

ISO 13543:2016 Copper, lead, zinc and nickel sulfide concentrates Determination of mass of contained metal in a lot
BS ISO 13543:2016 Copper, lead, zinc and nickel sulfide concentrates. Determination of mass of contained metal in a lot
15/30277536 DC : DRAFT MAY 2015 BS ISO 13543 - COPPER, LEAD AND ZINC SULFIDE CONCENTRATES - DETERMINATION OF MASS OF CONTAINED METAL IN A LOT

ISO 5725-1:1994 Accuracy (trueness and precision) of measurement methods and results — Part 1: General principles and definitions
ISO 3534-2:2006 Statistics Vocabulary and symbols Part 2: Applied statistics
ISO 3534-1:2006 Statistics — Vocabulary and symbols — Part 1: General statistical terms and terms used in probability

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