Analytical Chemistry Interview Questions
Questions Answers Views Company eMail

why urasil use in hplc column perfomance?

Bayer,

1 8155

how do you perform reverse enginearing study for drug containing sodium chloride sodium citrate sodium bicarbonate

Strides,

1 3972

How will u perform degradation study in detectors other thann PDA in HPLC Methodology

Adley, Micro Labs,

2254

WHAT IS THE PURPOSE WE USE HCL, CHOPPER, BURNER, MONOCHROMATOR in AAS? PLEASE EXPLAIN BRIEFLY

2344

what is the working priniciple of ph, what are parts in ph meter

1 9598

why using the ph 4,7,9.2?

SRF,

1 5584

What is Temperature ?

Reddy Labs,

2 9996

What is the column performance and column efficiency?

Reddy Labs,

1 10614

why we are using in ph calibrations ph4,7,9.2 buuffers only?

Reddy Labs, Unichem,

3 16994

Is it necessary to validate both assay and related substances for usp official methods for products.

Apotex,

6 12826

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

Dr Reddys, Indoco Remedies, Natco,

2468

IS THERE ANY EQUIPMENT TO CHECK AND CALCULATE THE POLARITY OF A LIQUID?

Reddy Labs,

2166

what is the difference between lod and loq?

Apotex, Aurobindo,

4 36011

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

FDC, Laurus, Pharmaceutical,

1953

What is the exact reason to use THF and IPA in buffers of Reverse phase HPLC as a solvent?

Dr Reddys,

1 4610


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Un-Answered Questions { Analytical Chemistry }

How to establish relative response factor for hplc. Why it is required?

927


how you start RS method development when for new product?

448


before starting analytical method valodation what you checking? and how giving preference to start validation?

550


We use Potassium Dichromate solution for the calibration of UV-Visible Spectrophotometer in UV region. My question is to calibrate visible region which solution could be used in photometric accuracy

1552


What is split ratio in Gc? Splitless? how requirr to select?

569


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?

539


How to do regeneration of Metacarb Pb plus column?

2283


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

1187


all types of questions asked at the cipla interview

4385


mode of absorption in alimentary canal?

2096


why should we perform dissolution PVT calibration only by UV spectrometer, not by HPLC ?

1404


How to calculate coreletion coefficient

1350


how to set sample and standard concentration in RS method?

617


what are the guidelines for analytical method validations?

793


What is the diference between residual solvents and organic volatile matter

1723