Analytical Chemistry Interview Questions
Questions Answers Views Company eMail

why urasil use in hplc column perfomance?

Bayer,

1 7676

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

Strides,

1 3670

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

Adley, Micro Labs,

2079

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

2191

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

1 9328

why using the ph 4,7,9.2?

SRF,

1 5368

What is Temperature ?

Reddy Labs,

2 9716

What is the column performance and column efficiency?

Reddy Labs,

1 10364

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

Reddy Labs, Unichem,

3 16632

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

Apotex,

6 12213

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

Dr Reddys, Indoco Remedies, Natco,

2338

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

Reddy Labs,

2036

what is the difference between lod and loq?

Apotex, Aurobindo,

4 35384

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

FDC, Laurus, Pharmaceutical,

1828

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

Dr Reddys,

1 4288


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Un-Answered Questions { Analytical Chemistry }

In Assy by potentio metry titration method how select MET U ,DET U, SET U,

1420


we are performed SOR for a particular product the limit is -6 to -10.We face particular bathes it is not meeting the specification.we performed diffrent instrument diffrent analyst we are getting diffrent diffrent results.solvent is dimethyl sulfoxide what could be the reasion

1431


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

2079


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

2185


What is column in chromatography?

1820






if content uniformity passing but dissolution varrying then what is next step?

450


A ha tc is actual defination of retention time?

1139


Qc interview questions

1326


how many types of balance calibration test?

1798


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?

402


cefoperozone and sulbactam inj. hplc test method

2198


what is the extinction coefficient for Indomethacin or at 319nm wave length.

3584


if tech transfer fails whay require to do?

396


what is the acceptance criteria for enteric coated tablets in 0.1n hcl validation in each parameter?

433


Tell me about analytical method validation in QC

5706