Analytical Chemistry Interview Questions
Questions Answers Views Company eMail

give clarity of linearity and range in method validation

859

how do we get usp reference standard potency?

MSN Pharma, Ind Swift Laboratories,

1 1602

what is the origin to prepare standard operating procedure

881




why we are using sodium,potassium phosphates for mobile phase preparation?

1 7421

why water factor is near about 5.0 in kf titration?

Claris Lifesciences, Indchemie Health Specialities,

3 9281

Why 1800 ml of dissolution media used In Carbamazepine ER USP Tablets But other drug only 900 ml Media Used ?

Torrent Pharma,

1 2482

what is use in calibration of conductivitimeter?

SRF, Claris Lifesciences,

1 2724

how to calculate corelation coefficient in G.C Calibration? what is the calculation part?

Ortin Labs, Cipla,

876




reasons for negative peaks in chromatography

DRL,

5 9509

why octanol used to determine the partition coefficient ?

896

if partition coefficient value was positive means, what it indicates ?

1 1752

why has inject 5 injection in assay

Lupin,

2 9372

why has inject 6 injection in Releted compounds

2 6536

why we should take dst factor for below 1%moisture samples

Ind Swift Laboratories,

1304

what is end capping in hplc coulmn

Lupin, Zydus Cadila,

2 8150


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Un-Answered Questions { Analytical Chemistry }

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

292


Tell me something about Vitamin A test method by HPLC

1258


is it necessary to do HPLC calibration at wavelength 315nm if we are doing analysis at this wavelangth

489


What is the difference between Discriminating media and DPDM(Dissolution Profile with Different Media)

4987


What is method validation in quality control

2300






What is stray light in uv what are units for stray light

129


In BP2013, Loperamid HCl monograph. Assay by titration with 0.1N sodium hydroxide using hydrocloric acid 0.01N and reading the volume added between the 2 points of inflexion. I have a question that if the diluent solvent is ethanol is certainly consumed a amount of volume of titrant, so this volume must be eliminated on the result calculation or not apart from first point which is subtracted above.

1522


How to choose concentration of LOQ solutions for RS analysis? Example.

661


In HPLC Calibration, On which basis RSD Limit of noise test is fixed (NMT 33.0 % )

1890


how much mass should be there in volumetric flask while in preparation of sample for assay? 

1063


how to calibrate hplc & gc

3016


why disodium tartarate used in karl-fischer instrument ?.

609


WHAT IS THE PURPOSE WE USE HCL, CHOPPER, BURNER, MONOCHROMATOR in AAS? PLEASE EXPLAIN BRIEFLY

969


what is difference between UV - VISIBLE MODEL NO like 1600,1601,1700 etc ? plz explain me

1095


What is viod volume and peak purity in HPLC?

1253