For LOD and LOQ determination which method is accurate? (slopemethod or s/n ratio method)4 7034
how to develop the shorter run time for pharmacopeial methods having 100 min run time?3 7748
How you start the method development of unknown compound.1 3578
Is there any difference in principal of reverse phase and normal phase chromatography? and why? Please update. Thank and regard3 7758
How can you prepare 0.05M Ammonium acetate volumetric solution?2 13728
IF WE INCREASE FLOW RATE RT DECRESE.WHY2 7852
in 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 calibration4 9393
various methos to calculate precision in validation methods in HPLC?2 4981
What is the main difference between ODS1 and ODS2 Hplc column.
How can the GC or HPLC method is selected to determine the impurity profile in drug product?
can we use the same detector in HPLC as well GC and what could be the differences we can find in the final chromato graph in any aspects?
HI,I CLEARED BOB CLERK EXAM. MY INTERVIEW WILL BE ON 9TH OCTOBER,2010.PLEASE SEND ME INTERVIEW QUESTIONS AND ANSWERS. THANK YOU.
WHAT IS THE CRITERIA FOR SELECTION OF TIME OF DISSOLUTION AND THE MEDIUM OF DISSOLUTION?
using gradient pressure in gas chromatography are not ?using gradient pressure why
why lactose has less charges when packed in steel containers when compared with packing of lactose in polyamide material?
In HPLC calibration, caffeine is used as primary standard for wave length calibration due to caffeine is having dual maxima at 273 & 205 nm and one minima at 245 nm. Any body can give reference of these details from any pharmacopeia (with chapter no.) or any other authentic guideline?
What are modes of quantification in related substances
what is the importence and role of LCMS and LCMS/MS and their applications? which type of compounds are analysis by lcms?
Why sodium hydroxide used for maintain pH of phosphate buffer
why we should take dst factor for below 1%moisture samples
what is the principle involved in turbidometry and nephelometry ?
Why acetonitrile and water are used as extraction solvent when analysis melamine? I thought they are miscible and won't be able to separate...
about method developement in hplc