What is the principle of HPLC, GC, LCMS, GCMS,LC QQQ, GC QQQ, LC Q TOF and GC Q TOF. What are the applications and Specificity?

8868

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

1861

Why we use potassium dichromate in uv calibration Exact reason behind it??

1263

In BP2013, Loperamid HCl monograph. Assay by titration with 0.1N sodium hydroxide using hydrocloric acid 0.01N and reading the volume added between the 2 points of inflexion. I have a question that if the diluent solvent is ethanol is certainly consumed a amount of volume of titrant, so this volume must be eliminated on the result calculation or not apart from first point which is subtracted above.

3131

While performing TOC sst analysis Zero shift disabled & sample analysis zero shift enabled why?

2874

What is the accrptance criteria in RSD for RS method precision on basis of impurity percentages?

834

if peak get problamatic then what require to do?

807

Why sometime potassium ortho phosphate mix with acetone use for sample preparation for hplc

1475

How to determine water content of bis tetrazole amine mono ammonium salt

3489

how require to fix the linearity and accuracy cincentration range?

1676

which are the diffrent batches in the pharmaceuticals?

826

how to qualify the impurity?

880

[3/30, 13:29] Manoj P Venkatpurwar: How hplc column selection according to structure? How mobile phase buffer selection on molecule structure?

809

how to calibrate hplc & gc

4516

If vendor having more imp than monograph then how to proceed? and how to set spec?

938