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 ?

Wockhardt,

2226

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?

1338

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?

Glenmark,

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?

263


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

1173


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

754


about method developement in hplc

456


iam usig ph buffers merk. manually how to prepare ?

1048






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

1012


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

859


cefoperozone and sulbactam inj. hplc test method

1342


A ha tc is actual defination of retention time?

302


what is the structure of DOWEX-50

3815


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

299


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

15


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

2180


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

2146


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

1050