AS 4433.3:2002
$43.55
Guide to the sampling of particulate materials – Estimating sampling precision
Published By | Publication Date | Number of Pages |
AS | 2002-07-12 | 40 |
Sets out methods for checking and adjusting the precision of sampling of particulate materials, and checking the precision of subsequent sample preparation and measurement.
Scope
This Guide sets out methods for checking and adjusting the precision of sampling of particulate materials, and checking the precision of subsequent sample preparation and measurement.
The procedures described in this Guide apply to sampling of particulate materials from both moving streams and stationary situations, and to the subsequent sample preparation and measurement.
Experiments to check for precision and bias should be carried out for all sampling programs, whether they use manual effort or employ mechanical devices. The experiments should be implemented on a regular basis. Procedures should be repeated whenever significant change has occurred in the character of materials being sampled, especially in the nominal top size or particle size distribution. Check experiments for precision and bias for the installation as a whole should always be conducted when a mechanical installation is commissioned or when principal parts are modified.
Methods for checking for bias are described separately in AS 4433.4.