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Analytical Chemistry Interview Questions
Questions Answers Views Company eMail

tell me about aliphatic acid estimation by hplc which columns can we use

Dr Reddys,

1 3646

does water content by KF will calculate only external moisture absorbed or the ligand ? (for ex copper sulphate pentahydrate)

NA,

1976

Why we perform the ir analysis?

Sequent,

3 5162

difference between calibration and validation

Mylan,

2 5161

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

2360

Data was integrated with RRT CONCEPT OR Overlay with SSTchrmatogram concept which is better?

1 3283

what is the difference between qualitative analysis and quantitative analysis and explain them?

Dr Reddys,

1 3413

why disodium tartarate used in karl-fischer instrument ?.

Dishman,

1 2983

why does used dry caffien in HPLC calibration?

Dishman,

2079

Why we don't add Hcl, HNO3, H3PO4 in residue on ignition, why we add H2SO4

1 4080

What is gelatinization?

Nestle,

1672

What is FFA, PV, and PAV value in oil.

Nestle,

1 4202

Why we check moisture,ash & AIA in product

1941

When recording an IR spectrum in the lab, we take no special precautions to account for the presence of oxygen, nitrogen, or argon in the air. What are the consequences of this?

1 2718

about method developement in hplc

1761


Post New Analytical Chemistry Questions

Un-Answered Questions { Analytical Chemistry }

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

2347


in which situation require to take incident in validation?

1783


what parameters we will consider while developing a HPLC method and how we confirm our HPLC method is valid?

3750


UV and PDA detector, which have less signal to noise ratio?

1177


Ph meter can show more than 14 ph reading? Why ph range in between 1 to 14 only?

795


If suppose 10 methods of dissolution given in pharmacopoeial for single content product then which method out of 10? or all 10 require to follow?

1040


effect of pore size, pore volume, partical size, column length, carbon load on retention time? what is carbon load? what is the use?

1004


why multimedia dissolution require to do?

867


how the compound separate in coulunm,explain

2593


why cone formation during dissolution?

847


How can I develope method of dissolution by HPLC OR UV

2455


how to qualify the impurity?

944


how require to fix the linearity and accuracy cincentration range?

1738


in sampling of raw material which side is pasted sampled labels

1886


if rsd failed then what require to do?

880