Analytical Chemistry Interview Questions
Questions Answers Views Company eMail

wen v have polr solvent then which type of column use in hplc

2 7266

What is Threshold in hplc?


2 19346

Why we use Caffeine in hplc calibration

Emcure, Laurus,

2 12516

what is the meaning of stress study?

Reddy Labs,

2 4247

what is the difference between potentiometric assay and hplc assay


2 17187

why we are using buffer solutionas as a mobile phase in hplc.

2 10504

importance of internal standard and in what conditions it is used?

1 3967

how to selecet an exact coloumn for an new molecule development by hplc how to select exact salt as buffer for new molecule development by hplc what is the the process to select the mode of saparation of compoundes by hplc what is the use of ph of buffer what is use of buffer,ph,organic phase,ans methods how the molecules get saparated in coloumn,


how to select short coloum and long coloumn for new molecule

Rampex Labs,


what is poarimeter, why it is used in pharma,and explain briefly about polarimeter?


3 9783

Why KBR is used in IR for preparation of pellete, why it shows zero dipole moment


7 12764

what is optical active and non active give examples?


1 4329

what is custom fields in waters system?

Akorn India, Aurobindo,

1 7715

my name is santhosh i cmpleted in 2009 then i went to uk in 2010 to pg diploma business management. after i came back to india.. recently again apply to uk for pharmaceutical analysis. they refused my visa you failed to explain y u r change subject. so plz ineed answer for y change the cource

1 2720

why kbr is used for pellet preparation in ir spectroscopy, give the reasons? why kbr shows zero dipole moment?

6 15998

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Un-Answered Questions { Analytical Chemistry }

if you have given one product then how you determine the impurity in that?


Why Ethanol is Used for Standardization of GC Head space?


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


Why we used in n-butyl acetate water content terminology while in ethyl acetate we used moisture content terminology?


Identify problem faced when mass spectroscopy is used with HPLC system ?


why does used dry caffien in HPLC calibration?


How can the GC or HPLC method is selected to determine the impurity profile in drug product?


what is lod and loq ?,why use k2cr2o7 , kcl h2so4 in uv calibration ?,why use benzophenone & caffene acetone in hplc calibration ?,what is leading peak in hplc ?why we do the calibration of limit of stry light in hplc & uv ?


Why we select scan range from higer wavelength to lower wavelength in uv visible spectroscopy and ftir spectroscopy ? .


Which type of column should i use to check the purity of high molecular weight protein using HPLC reverse phase column chromatography? Hi everyone. I wanna to check the purity of high molecular weight protein (collagen) with MW of ~130 kDa using a HPLC. I know C18


How require to develop GC method? how to select diluent, GAS, column selection and other chromatographic conditions?


in each media we require to use SLS? how to proceed?


How you develop a method in HPLC?


In HPLC (Waters) software Empower1,2 &3 what is the updation for each version


mode of absorption in alimentary canal?