Secondary Check QAQC Module

wenshifu

Hi, I am very confused. How to get a good and clear understanding for Secondary Check QAQC Module? And it a results by group uncertainty calibration reference material?

Bence

Hi wenshifu

The Secondary Check QAQC module is described here.

If you have any specific questions, please let us know.

Kind regards,
Bence

wenshifu

Bence Thanks, Actually, I want to know the calculative process of the Secondary Check and, you know, it gives an indication of how much reliability there is in the analysis results.

Bence

Hi wenshifu

What in particular would you like to know more about?

There are two basic statistics calculated: the percentage difference from the accepted result (100 * group mean / accepted value) and the RSD of the group results (group SD / group mean).

There is no definitive 'reliability' measure (that I'm aware of). Typically trace element concentrations within 10% of the accepted value are considered OK for most elements. Obviously this depends on concentration. Similarly, RSDs should be around 10% or less, but again depends on the elements.

Is there some other detail you'd like to know?

Kind regards,
Bence

wenshifu

Bence

Thank you very much for your patient answer.

Good Wishes
Wenshifu