Phone: +1 758-453-0049
E-mail: info@slbs.org
Bisee, Saint Lucia LC04301

ISO/PWI 12745

Copper, lead and zinc ores and concentrates — Precision and bias of mass measurement techniques

General information

00.00     Dec 6, 2021

ISO

ISO/TC 183

International Standard

Scope

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.

Life cycle

PREVIOUSLY

Revises
ISO 12745:2008

NOW

IN_DEVELOPMENT
ISO/PWI 12745
00.00 Proposal for new project received
Dec 6, 2021

Preview

Only informative sections of projects are publicly available. To view the full content, you will need to members of the committee. If you are a member, please log in to your account by clicking on the "Log in" button.

Login