How to set analyticl specification for combination products?

689

what is the difference between potentiometric titration and karl fischer titration?

3115

I have compare C2H2-air and C2H2-N2O flame AAS on determination calcium. Both use same range of std to plot calibration curve. (2-6ppm) When i measure the sample with phosphate, KCl and LaCl, C2H2-N2O flame give false positive result, around 0.5ppm. When i measure the sample with phosphste, KCl and EDTA. C2H2-N2O flame also give 0.5ppm false positive. But both above mentioned sample would not give false positive when measured by C2H2-air flame. What is the reason?

3489

what is impurity profile. how to interpret this impurity profile to a drug product or drug substance.

2585

How to start the dissolution development for unknown tab?

1615

For titration in anhydrous media with perchloric acide, if lack of titrator, Which indicator is been used for replacement. How calculate pH of test solution to choose suitable indicator?

2264

how require to select dissolution media? what is discrimination?

745

if you have given one product then how you determine the impurity in that?

691

how to select short coloum and long coloumn for new molecule

2358

how much mass should be there in volumetric flask while in preparation of sample for assay? 

2515

What should be the level/ Percentage of Arsenic in Arsenic free zinc.

2180

what are the standard methods for HPLC?

2737

how many types of balance calibration test?

2250

if you have given a blank water how you analyse by general analytical techniques?

1977

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

2611