Analytical Chemistry Interview Questions
Questions Answers Views Company eMail

what is lod and loq

3 7731

what is lod and loq ?,why use k2cr2o7 , kcl h2so4 in uv calibration ?,why use benzophenone & caffene acetone in hplc calibration ?,what is leading peak in hplc ?why we do the calibration of limit of stry light in hplc & uv ?



What is the b/W dead volume and dwell volume ?

2 11123

why r u using hplc grade solvents

4 8611

Why do we use sodium salicylate for Calibration TLC Cabinet U.V Lamps

Matrix, Spar Labs,

2 14729

How do you show that equal quanitities of two isomers provide the same response using a PDA

1 3849

what is GLP? Which industries it requried?

GVK, Aurobindo, AXIS Clinicals,

1 9995

How can we separate Urea & semicarbazide in single HPLC method ?

2 4556

What is the calibration procedure for Malvern MS2000 particle size analyzer and acceptance criteria?

Reddy Labs,

2 2815

why we can use only 4 and 7 and 9 buffers in pH calibration

Cipla, Chola,

1 2753

How to do regeneration of Metacarb Pb plus column?


we calibrate HPLC once in 6 months while iam doing calibration i came to know that calibration was failed. then how can i justify that the samples analyzed on the system during this 6 months was wright? how can i forward in to the next step for those batches?

5 8447

What is the solvent/material used to balance spirit level in analytical balance?

Glenmark, MMC Health Care,

4 8755

why plane of polarized light rotated by opticaly active compunds?


1 4311

why do we use around only 60 mg of K2cr2o7 in the UV calibration -control of absorbance test?

Reddy Labs,

3 10288

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Un-Answered Questions { Analytical Chemistry }

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


what is impurity profile. how to interpret this impurity profile to a drug product or drug substance.


Identify problem faced when mass spectroscopy is used with HPLC system ?


about method developement in hplc


iam usig ph buffers merk. manually how to prepare ?


why we use Dichlorobenzene.nitrobezine.t-butyldi sulhate.for calibration of gc Head space


What is the difference between purge septum flow and column flow in gas chromatography?


cefoperozone and sulbactam inj. hplc test method


A ha tc is actual defination of retention time?


what is the structure of DOWEX-50


We use Potassium Dichromate solution for the calibration of UV-Visible Spectrophotometer in UV region. My question is to calibrate visible region which solution could be used in photometric accuracy


In Assy by potentio metry titration method how select MET U ,DET U, SET U,


what type of question will ask in the interview of lab chemist.


What is the main difference between ODS1 and ODS2 Hplc column.


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