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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 3588

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

NA,

1921

Why we perform the ir analysis?

Sequent,

3 5031

difference between calibration and validation

Mylan,

2 5089

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

2307

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

1 3217

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

Dr Reddys,

1 3359

why disodium tartarate used in karl-fischer instrument ?.

Dishman,

1 2917

why does used dry caffien in HPLC calibration?

Dishman,

2038

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

1 3999

What is gelatinization?

Nestle,

1629

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

Nestle,

1 4117

Why we check moisture,ash & AIA in product

1895

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 2663

about method developement in hplc

1724


Post New Analytical Chemistry Questions

Un-Answered Questions { Analytical Chemistry }

Please tell me about the pH of Polycaboxylic ether is it in the 5-6 range ever or more than 6

2614


How to choose the which salt is suitable for mobilephase

3262


What is control room temperature and which guide line says?

1650


What are the primary considerations in extractables and Leachables ?

2283


what are the guidelines for analytical method validations?

1110


why digestion require in icpms?

779


Why irmoisture balance is used for corrugated box moisture testing

2405


why does used dry caffien in HPLC calibration?

2038


what is mean by extactable and leachable study?

1184


WHAT IS THE CRITERIA FOR SELECTION OF TIME OF DISSOLUTION AND THE MEDIUM OF DISSOLUTION?

2578


WHY pKa value is more important than pH value of the mobile phase in HPLC?

1773


which situation gc hs and gc als require to use?

800


in api coa contains only process impurities and in product coa contains degradation impurities?

707


in sampling of raw material which side is pasted sampled labels

1847


In HPLC (Waters) software Empower1,2 &3 what is the updation for each version

3036