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Analytical Chemistry Interview Questions
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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?

Glenmark,

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.

Apex,

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.

 1075

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,

6937

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

1248

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

336

how to select short coloum and long coloumn for new molecule

1008

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 ?

1136

what is the origin to prepare standard operating procedure

947




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.

1197

Can we interpret accuracy from linearity in method validation?

733

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

967

what is procedure of actual procedure for registration of drug?

608

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.

1105

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

942

Tell me about analytical method validation in QC

1789

what is the purge flow & how to calculate

1159

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

540

What is column in chromatography?

777

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