Analytical Chemistry Interview Questions
Questions Answers Views Company eMail

What is void volume & dead volueme

Bayer, Lupin,

3 12890

How we will diapose UV (detector) lamp?

Bayer,

1 6487

Principle of single pan analytical balance

Amneal Pharmaceuticals, Bayer, Dr Reddys,

4503

what is the disso medium for tropsiun chloride

1734

what is the meaning of linearity,principle of co-relation coefficient?

3 8724

how can we determine RRF value in HPLC FOR CALCULATION OF IMPURITY ?

Macleods,

4 48198

In UV we measure absorbance , how it is happend ? explain me

4 10003

why we are performing residue on ignition?

6 21093

why we are performing residue on ignition?

2 8844

NMR is both qualitative and quantitative?EXPLAIN

2 5776

why buffer is added in solvent system in HPLC ??

Lupin,

10 16425

how can we calculate void volume?give its importance in brief

Natco,

1 8688

What is the function of end capped column?

Cipla,

5 32229

HOW TO CALCULATE THE MASS OF UNKNOWN IMPURITY IN LC-MS? AND WHAT IS THE ROLE OF FRAGMENTATION IN LC-MS ?

1 5419

how calculate column dead volume in hplc ?

Torrent Pharma,

3 21173


Post New Analytical Chemistry Questions

Un-Answered Questions { Analytical Chemistry }

[3/28, 20:52] Manoj P Venkatpurwar: how many impurities require to inject in assay specificity that how we can find out? and in Rs also how?

250


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

1558


Which products will produce when acetic anhydride reacts with Ter-butanol, Sec-butanol, Iso butanol, Dimethylamine etc.

2312


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

236


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

1995






Why potassium dichromate is used in calibration of uv?

1269


if your product is soluble in 0.1n hcl and water then which you choose as media from these 2 media?

204


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

240


How can we confirm the HPLC column is end-capped or not? Is it possible to identify by physical appearance?

2640


could negative ions be produced by bombardment process in mass spectrometry?

1176


how decide the clining method and cleaning method validation require for this perticular products?

226


if rsd failed then what require to do?

255


Please give idea about method development for cleaning method and how maco level establish

194


why we use glass fiber filters use in some situation?

254


For standardization of volumetric solutions, acceptance limit for concentration is considered as 10% of nominal concentration and %RSD as NMT 0.2% (for appropriate no. of replicates). But , if %RSD has not met, what should be further action?

1150