what is the purge flow & how to calculate

2648

how to calculate elemental impurities?

1032

for inorganic molecules require to do RS, Assay and disso?

733

Which are the diffrent grades of api in pharma?

770

1.What is the difference between method validation and method verification 2.Which guidelines proposed to method transfer

1851

if rsd failed then what require to do?

836

What is the main difference between ODS1 and ODS2 Hplc column.

5219

WHAT IS THE USE OF STARTER ?????????

2425

how to qualify the impurity?

874

in monograph 7 imp are there but in vendor showing 5 imp do not req to include 2 imp for that what will be justification?

722

Many times I don't got a caffeine peak in calibration of hplc using guard column ❓

1819

some product having water content method with pyridine and ethylene glycol mixture instead of methanol? how they are selecting and methanol is not suitable solvent how ?

2653

How can we confirm the HPLC column is end-capped or not? Is it possible to identify by physical appearance?

3218

What is the difference between purge septum flow and column flow in gas chromatography?

2584

what is diffrence between specificity and selecivity?

779