Test Methods

The test methods included in these pages are for information only. By making these test methods available on its site EHRAC does not imply approval of any particular method or any preference.

However, all of the methods have been published in a peer reviewed or similar journal. In some cases they have been in use for many years and undergone a series of refinements, in other cases they have been 'ring-tested' across' a number of organisations to determine the reproducibility of results across different test centres.

It should be noted that whilst these methods may allow a standard test procedure to be followed it should not be assumed that all test organisations using that method will produce the same results. For this reason it is often advised that the same test centre is used particularly when testing samples from a wide geographical area or from year to year.

In some cases the test methods are available for immediate download. However, in many cases references are subject to copyright restrictions. We will try to add the actual papers where we can or failing that an extract to help users determine the relevance of any particular reference.