We have mentioned earlier the importance of choosing and testing of the column when developing a chromatographic method. But what should...

We have covered several parts of the AIQ: a promotion for a couple of fine white papers, DQ, and PQ. Now let's start to think about how...

There was a post earlier about how to manage OOC investigations. But what if your service provider has its own deviation management...

In case of analytical instruments, some companies use the term Out-Of-Calibration, others use Out-Of-Acceptance for failed recalibration...

Okay, here's a situation: you did your QC-test*, and the result is OOS out of the blue- but you know, you really know it is a lab error....

Let me think out loud about how to develop the perfect GC method for QC purposes. In pharma, there may be a lot of different GC-methods...

In former posts, we discussed the DQ in general, and the analytical instrument PQ. Now let's collect what we need to perform a thourough...

Sometimes the question comes up: what should we really test during the PQ on a newly purchased analytical instrument? You did your best...

You may fall into an OOS investigation, when even after a thourough expedition, you have doubts if your lab does something wrong, or you...

Agilent tries to help the companies understand the essence of the latest (2017) change in USP section <1058>: Analytical Instrument...