well let's say that there's a lab only perform some tests related to environment such as ( oil , Soil and Gas tests ) they do more than 30 different test according to the customer requirment ..

they are wish to be ISO17025 certified .. so my question is should the scope of the certificate include all the 30 tests ? so the lab should have a procedure of each test including the technical elemnts like method selection and validation , testing , handling , reporting .. etc

or what ?

waiting your answers

If the lab is going for accreditation, I would say start with the "bread and butter" then add the remaining standards in a scope expansion.

However some of that will depend on the accrediting body (AB) selected. If the lab is in the U.S. there are several and the lab should not select one until a thorough examination is made of all 6.

Starting with a smaller scope makes the accreditation process easier to control in general, and will likely reduce the number of technical demonstrations to be observed, thus saving some money perhaps.

Hope this helps.

Thanx alot ..

so the lab should choose the basic tests to add to certificate scope

in such a case .. can they put a " generic " technical procedures to handle all tech. requirments in ISO17025 standard .. and develop some work instruction for every single test .. or should they create a procedure for every test ?

for example the lab will create a procedures titled : Test Method & Method Validation contains a generic steps about how the operators select the different method according to the type of the test and how they validate that method they selected ..

and on the other side the lab will creat a specific WI about a single test which is included in the scope specify all the required tech. steps from the Sampling to Reporting ..

waiting for your valuable answer :agree:

Where possible, use published methods and if the customer needs a different test point but the published method can otherwise be used that is easy to work with.

If the laboratory develops its own methods then those must be validated before they can be used for tests under the scope. A working procedure distilled directly from a published method and referenced back to that published method however is generally considered validated.

If sampling is consistent in the method and plan across the tests conducted, a single procedure for that can suffice. If each type of test has different sampling requirements however then put it in the applicable procedure.

Where are you at in terms of preparation? Just starting, almost ready to go for accreditation, or some point between? There may be much more information that can be suggested depending on that. Also, this board (17025 board) has several discussions regarding various aspects of preparation. You may find some good tips in other messages also.

Hope this helps.