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Is there any difference in principal of reverse phase and normal phase chromatography? and why? Please update. Thank and regard
3 11464in hplc calibration injector linearity pass,it means inj and det is good. why to perform detector linearity is it required, if it is required,what is difference between injector and detector linearity in hplc calibration
4 16091Post New Analytical Chemistry Questions
Why a1% value is used for some product ? What is the criteria for selection a1% value ?
What is the difference between purge septum flow and column flow in gas chromatography?
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 ?
If inhouse hplc related substance method is completly diffrent from Usp for finished proďuct with diffrent impurities then how require to prove method equivalecy?
what type of question will ask in the interview of lab chemist.
why require to add enzymes in capsules dissolution only? is it require to tablet also?
Why Ethanol is Used for Standardization of GC Head space?
which batch require to use for analytical method validation?
what is the acceptance criteria for enteric coated tablets in 0.1n hcl validation in each parameter?
what is mean by nitrosamine impurities?
What is the diference between residual solvents and organic volatile matter
How would you decide dissolution medium for NCE compound of class I drug
why holium oxide prepared in 10% HCLO4 SOLUTION
acceptance criteria for lod & loq by standard deviation of response and slope??
How do we fix the sample concentaryion in hplc method development?
