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ISO 12745:2008-ed.2.0
Copper, lead and zinc ores and concentrates — Precision and bias of mass measurement techniques
Automatically translated name:
Copper, lead and zinc ores and concentrates -- Precision and bias of mass measurement techniques
STANDARD published on 29.9.2008
The information about the standard:
Designation standards: ISO 12745:2008-ed.2.0
Publication date standards: 29.9.2008
SKU: NS-424202
The number of pages: 47
Approximate weight : 141 g (0.31 lbs)
Country: International technical standard
Category: Technical standards ISO
The category - similar standards:
Annotation of standard text ISO 12745:2008-ed.2.0 :
Description / Abstract: 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.
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