Product quality issues

Both methods are reliable. The key is who to make believe in!

This is the SOP related to the product quality indicators. If it is listed in standards or similar pharmacopoeias, then the method is strictly defined and must be followed according to those standards! If there are no strict regulations, then there is no need to insist on one’s own opinion; the key is to see whether the differences between them affect the normal use of the product!

Agree with the person above. This issue requires analysis on a case-by-case basis; the key lies in whether it will affect the requirements for product quality. Of course, it is necessary to confirm whether the basis for comparison is the same; for example, whether the same chromatography columns are used and whether the same instruments are employed. The separation efficiency of chromatography columns varies, and if these conditions differ, slight differences may occur, which means that the issue lies not only in the calculation methods.

I believe that when conducting content analysis, no matter which method is used, the most important thing is to ensure that the operations are carried out accurately, that the equipment meets the required standards, and that the standard samples used are accurate and free from contamination; only in this way will the results obtained fall within the error range permitted by national standards. If one really wants to determine whether the test results are accurate, the best approach is to use a standard and prepare samples according to the standard methods for arbitration, carrying out precise operations repeatedly until the results of three parallel tests are roughly consistent; at that point, the results should be representative. The two methods mentioned on the first floor differ significantly from each other; if it comes to the issue of whether the quality is satisfactory or not, it’s certainly a serious matter. The best approach for our factory to resolve such issues is to turn to a third arbitration institution that is authoritative and recognized by both parties involved. Naturally, the decision will be based on the results determined by that arbitration institution.

1. The reason for the discrepancy is whether the correction factor was taken into account or not. 2. The solution is for both parties to use the same calculation method. 3. Use the same instruments to calibrate the same sample on both sides

If there are standards, following those standards is the best choice! ! ! !

Agreed. For the floors above, and the floors above those, and so on, generally, the standard requirement is that internal standards be used for quantification, right? I’ve never used area normalization; I’m afraid there might be problems in the end and I’ll get crushed by the boss. What Old Ox said – using the same sample to calibrate both instruments – is a viable method. When there are discrepancies in the data from both sides, doubt yourself first and ensure that you do your own work properly. First, calibrate your instrument using a standard sample according to the standards (or a method agreed upon by both parties)

If there is a method specified by relevant standards, those standards shall be followed; if no such standards exist, then either of the two results can be used as a basis. It mainly depends on both of you reaching an agreement to use the same analytical and quantitative methods. If we fight in this way, it’s completely meaningless

The correction area normalization method is still more accurate, provided that the correction factor is accurate.

The correction area normalization method is standard; correction factors can be found in relevant literature

Yes, the area normalization method seems not to be used as a means of arbitration, as it has certain limitations; if accuracy is required, the internal standard method is probably still the better choice!