What is ISO 13909-8 - Hard coal and coke - Methods of testing for bias about?

ISO 13909-8 sets out principles and procedures for testing the bias of test samples of hard coals or cokes, taken in accordance with other parts of ISO 13909.

Note: In the text, the term “fuel” is used where both coal and coke would be applicable in the context and either “coal” or “coke” where only one is applicable.

Who is ISO 13909-8 - Hard coal and coke - Methods of testing for bias for?

ISO 13909-8 on hard coal and coke - Methods of testing for bias is useful for:

Coal industry
Sampling agencies
Testing houses and laboratories

Why should you use ISO 13909-8 - Hard coal and coke - Methods of testing for bias?

It is not possible to lay down a standard method for field work by which a sampling procedure can be tested for bias because details of the procedure will inevitably be affected by local conditions. However, certain principles can be specified which ought to be adhered to whenever possible and these are discussed in ISO 13909-8.

Testing for bias can be a tedious and expensive process. All bias tests specified in ISO 13909-8, therefore provide a thorough pretest inspection, with appropriate action taken regarding any system deficiencies likely to cause bias.

ISO 13909-8 provides detailed operating protocols to ensure uniform and consistent collection, weighing, and processing of samples. This includes the preparation of facilities and assembly of all equipment necessary for the collection of samples, processing and packaging them, and transporting them from the collection and weighing sites to processing facilities and to the laboratory for analysis in an efficient manner.

What’s changed since the last update?

BS ISO 13909-8:2016 supersedes ISO 13909-8:2001. BS ISO 13909-8:2016 has been technically revised.

BS ISO 13909-8:2016

Hard coal and coke. Mechanical sampling - Methods of testing for bias

Published:

30 Jun 2016

Withdrawn:

27 Aug 2025