Analytical Chemistry Interview Questions
Questions Answers Views Company eMail

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

2 5274

What is Threshold in hplc?

Hetero,

2 14161

Why we use Caffeine in hplc calibration

Laurus, Emcure,

2 10250




what is the meaning of stress study?

Reddy Labs,

2 2409

what is the difference between potentiometric assay and hplc assay

Parabolic,

2 11044

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

2 8227

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

1 2512

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,

1190




how to select short coloum and long coloumn for new molecule

Rampex Labs,

1099

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

GVK,

3 7755

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

GVK,

7 7651

what is optical active and non active give examples?

GVK,

1 3007

what is custom fields in waters system?

Aurobindo, Akorn India,

1 6057

my name is santhosh i cmpleted b.pharmacy 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 1579

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

6 11117


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Un-Answered Questions { Analytical Chemistry }

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

333


Please tell me about the pH of Polycaboxylic ether is it in the 5-6 range ever or more than 6

1396


why we are using hexane in calibration of number of drop per mL

303


How to choose concentration of LOQ solutions for RS analysis? Example.

862


How to do regeneration of Metacarb Pb plus column?

1338






Why potassium dichromate is used in calibration of uv?

417


Why to use propyl paraben in HPLC gradient calibration

969


In Dissolution Test why limit is define Q+5% what is the role of +5%.

1617


why we use a particular hplc column for a particular compound give reasons?please

1581


What is control room temperature and which guide line says?

423


What is Band broading effect explain

646


What should be the level/ Percentage of Arsenic in Arsenic free zinc.

1104


what is the difference between potentiometric titration and karl fischer titration?

1289


is it necessary to do HPLC calibration at wavelength 315nm if we are doing analysis at this wavelangth

652


What is the main difference between ODS1 and ODS2 Hplc column.

2147