Analytical Chemistry Interview Questions
Questions Answers Views Company eMail

In burette calibration of Karl fischer Instrument, the multiplication factor 1.00693 is using for how much ml of water dispenced. why

1 1782

how can we decide the limit of cleaning validation? What is the criteria for it?


2 9510

What is difference between Related Substance & Impurity Profile?

Jubilant Organosys,

2 41302

Why we are injecting low load standard conc. while analysing Related Substances by HPLC?

3 7038

why wetlab is called as wetlab

6 11448

In UV-VIS spectrophotometer:My diluent is methanol even though i corrected base line for methanol,In my sample scan i found methanol peak.what is the reason?

2 7010

What is the diffrence between the performing of LOD ordinary drying at voven and vaccum method.


4 6392

How can we calibrate the burette dispencing capacity in metrorm kf titration calibration

1 4245

how a particular wavelength can be different for a particular compund while analysing by uv and by HPLC.


in hplc calibration we are using 0.05% acetone why we are using that one and what happen when its conc increases or decreases

Aurobindo, Cadila, Martin,

4 18834

loss on drying we applied vaccum for some compounds and some compounds are at 105c why

3 8115

why we are calibrating autopolarimeter with quartz control plates

1 3736

what is the different in Total ash, sulphated ash, acid insoluble ash, alcoholic or non alcoholic ash?

Siemens, GHI,


why we use TLC?

8 14314

why disodium tartarate is used for autotitrator calibration

Cipla, Micro Labs,

2 9262

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Un-Answered Questions { Analytical Chemistry }

cefoperozone and sulbactam inj. hplc test method


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


how to select short coloum and long coloumn for new molecule


some product having water content method with pyridine and ethylene glycol mixture instead of methanol? how they are selecting and methanol is not suitable solvent how ?


what is the origin to prepare standard operating procedure


How do we get end points and how many end points are possible for citric acid and di-acid not theorotically answer should be given practically.


Can we interpret accuracy from linearity in method validation?


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


what is procedure of actual procedure for registration of drug?


1)What's the meaning of Absorption,give a example. 2)What's the meaning of Adsorption,give a example. 2)what is the difference between Absorption and Adsorption.


why lactose has less charges when packed in steel containers when compared with packing of lactose in polyamide material?


Tell me about analytical method validation in QC


what is the purge flow & how to calculate


Why we used in n-butyl acetate water content terminology while in ethyl acetate we used moisture content terminology?


What is column in chromatography?