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Difference between uv detector nd RI DETECTOR? wt s the difference between OVI Solvents nd residual solvents incase of GAS CHROMATOGRAPHY? nd wt s its detection limit?
3 16158on what basis SOP's can be changed? IF mobile phase ratio is 70:30 to how much % can we change the ratio in HPLC process
7 17818how do start hplc method development? how much sample required for developing the method development?
3 52961which pharmacopeoia mentions that caffiene is used as a standard for HPLC calibration? which other standardscan be used for the same?
1 9294Why will a solution of aspirin without acid or basic hydrolysis give yellow colour with a solution of Ferric chloride?
1 5876In HPLC what is Single point threshold, peak purity index and minimum peak purity index? what should be consider for pure peak.
3 32538Post New Analytical Chemistry Questions
If we have 5 strength which is not dose proportinate and excipients also diffrent in each strength then how we can proceed for Force degradation? and excipient are same but not dose propotinate the how FD?
before starting analytical method valodation what you checking? and how giving preference to start validation?
about method developement in hplc
What is column in chromatography?
WHY given much noise PDA dector then VWD Dector
What is the formula for relative diffrence for standard solution in solution stability in validation?
[3/30, 13:29] Manoj P Venkatpurwar: How hplc column selection according to structure? How mobile phase buffer selection on molecule structure?
[3/28, 20:52] Manoj P Venkatpurwar: how many impurities require to inject in assay specificity that how we can find out? and in Rs also how?
WHAT IS THE CRITERIA FOR SELECTION OF TIME OF DISSOLUTION AND THE MEDIUM OF DISSOLUTION?
give clarity of linearity and range in method validation
when we talk about change in entropy we consider total entropy means of surround +entropy of system but when we talk about change in Gibss free energy we consider entropy of system.explain with reason.
What is control room temperature and which guide line says?
WHICH STANDARD WE USE IN SILICA ANALYSIS IN SILICA-GEL METHOD FOR SOLID SAMPLE
cefoperozone and sulbactam inj. hplc test method
What is split ratio in Gc? Splitless? how requirr to select?
