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Selection of test conc in RS
Posted: Fri Mar 08, 2013 6:52 am
by sharma
Dear All,
I would like to know how the test and standard concentration is selected in case of related substances test?
Regards
Re: Selection of test conc in RS
Posted: Fri Mar 08, 2013 11:01 am
by aceto_81
We use the minimal concentration where we still get the required LOQ.
Ace
Re: Selection of test conc in RS
Posted: Sat Mar 09, 2013 5:10 am
by sharma
My query is sometime we use 500 ppm solution or sometime less or more than this. So how we arrive at this concentration?
Re: Selection of test conc in RS
Posted: Tue Mar 12, 2013 8:13 am
by prepcolumn
My query is sometime we use 500 ppm solution or sometime less or more than this. So how we arrive at this concentration?
500 ppm means %0.05 and it is generally the reporting threshold, disregard limit for drug substances..