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Analytical Chemistry Interview Questions
Questions Answers Views Company eMail

What is difference between Potency & purity

3 15009

how to hplc calibrated

Dr Reddys, Glochem,

4 52647

state the principle of gas chromatography?

5 13630

Why noise test is performed at 254 nm in calibration of HPLC system?

4 18109

some compound havving uv region but not give much more response during hplc analysis

2 7448

I have got selected for Aurobindo Pharma AR&D, HR person is asking me to sign in agreement. can I join?

Aurobindo,

19 43893

Why sulfuric acid is used in sulphated ash / residue on ignition test.

CS Pharmaceuticals, Dr Reddys, GVK, HPLC, Micro Labs, Samrudh, Watson Pharmaceuticals, Wings Customer Care,

9 78148

what are the basic requirement for the WHO audit?

BioPlus,

1 9133

What is the thickness of polystyrene film?

Pharmaffiliates Analytics and Synthetics,

8 19235

During Validation study, Recovery is passing at all levels but Linearity is failing. Justify?

Mylan, Torrent Pharma,

1 5063

What is Stray light ? & what is the IMP of this

2 10098

how can I make the copper get white bye any salt or acit?

2151

If we do accuracy at same concentration at which linearity planned,what is the need to do linearity separately?

2242

why we use only sucrose in the calibration of polarimeter?

Kilitch,

7 28187

What is the Deference between Bulk density & Tap density ?

Hikma Pharmaceuticals, Neuland, Reddy Labs,

2 25548


Post New Analytical Chemistry Questions

Un-Answered Questions { Analytical Chemistry }

Why sodium hydroxide used for maintain pH of phosphate buffer

2335


how you determine moist.of NaOH sol or NaOH flacks

2180


please explian me about area normalisation method,diluted standard method,impurity vs impurity and which one has to be selected in method development

1579


if identification threshold crosses the limits then what next step?

801


WHAT IS THE USE OF STARTER ?????????

2358


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

1835


what is difference between UV - VISIBLE MODEL NO like 1600,1601,1700 etc ? plz explain me

2632


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

2686


about method developement in hplc

1667


What is related substance by HPLC impurity limits as per USP?

1037


If combination product how require to identify which imp is of which api?

791


Tell me something about Vitamin A test method by HPLC

2630


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

818


how we can identify the impurity is coming below loq at transfering site?

813


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

856