In which situation we require to analytical method validation of excipient?

740

for which product require to do content uniformity? what is limit of cu?

748

WHAT IS THE PURPOSE WE USE HCL, CHOPPER, BURNER, MONOCHROMATOR in AAS? PLEASE EXPLAIN BRIEFLY

2571

We use Potassium Dichromate solution for the calibration of UV-Visible Spectrophotometer in UV region. My question is to calibrate visible region which solution could be used in photometric accuracy

1839

Which parameter require to do for analytical method equivalency?

734

My question about gas chromatography sulfur chemiluminsecence detector. I test unknown sample gas by GC-SCD (calibrated ) and the result of *H2S is 279 PPM , *but when I test the same sample with the GC-TCD (calibrated ) the value of *H2S is 2500 PPM . I'd like to inform you that both GCs are calibrated and have very good operation conditions with stable parameters . the question is if the sample gas with higher H2S over detection limits of SCD detector (1000 ppm). why the result it 279 ppm Best regards

1550

how you start RS method development when for new product?

664

what is the procedure for cleaning of lenses of hatr accesory of ftir instrument?

2232

function of detecter in hplc ,gc and spectroscopy? function of carrier gas in gc?

2614

In IR spectra, generally a molecule vibrates without apply emr or ir light?

1912

If change in specification which parameter require to do for validation? if change in chromtographic condition then which parameter? if api change then which parameter? if change composition then which parameter? if old method not work out then whicj parameter? if additional one impurity added then which parameter of validation require to do on above each conditions? elaborate separately

801

is it necessary to do HPLC calibration at wavelength 315nm if we are doing analysis at this wavelangth

2109

pharma industries oriented

2182

Why do we use KMnO4 in the test of control of obsorbance ? and why do we take specific quantity i.e 57-63mg?

2782

what parameters we will consider while developing a HPLC method and how we confirm our HPLC method is valid?

3631