ISO 12745:2008
Current
The latest, up-to-date edition.
Copper, lead and zinc ores and concentrates Precision and bias of mass measurement techniques
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English
29-09-2008
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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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