Analytical Chemistry Interview Questions
Questions Answers Views Company eMail

One Raw material failed assay test is there any chance for failing purity of that material ?


7 8066

What are the differences between GC and HPLC?

1 11408

Why do we need GC instead of HPLC? or Why do we need HPLC instead of GC?

4 8770

What is linearity in HPLC and how will you test?

1 15393

what is the difference between polarimeter lamp and ir lamp


What is the difference of time between two consecutive injections in HPLC?

Nectar Lifesciences,

2 7595

what is difference between IR lamp and polarimeter lamp

Raks Pharma,

2 5479

Why dissolution test is not performed in all of the products

SDD, Biocon,


why we need to do karl ficher fector ?


2 8789

Why we are use 0.005M Sulphuric acid, in control of absorbance performance test UV Spectrophotometer calibration

Reddy Labs, Cipla,

2 11430

How much sample concentration should i inject against diluted standard in related substances for drug product in hplc analysis


1 1946

how to prepare 25 ppm acetone. explian with formula

4 10923

why sucrose not used in polarimeter calibration?


2 7436

What is the diffeence between assay and uniformity of content

2 6707

why ur using toulene in hexane in u.v calibration?


3 22292

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Un-Answered Questions { Analytical Chemistry }

What are modes of quantification in related substances


what is the structure of DOWEX-50


How to calculation of residual solvent methanol (3000 ppm) standard solution, and how many quantity used of test sample


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


how to selecet an exact coloumn for an new molecule development by hplc how to select exact salt as buffer for new molecule development by hplc what is the the process to select the mode of saparation of compoundes by hplc what is the use of ph of buffer what is use of buffer,ph,organic phase,ans methods how the molecules get saparated in coloumn,



what is %labelled amount in content uniformity of dosage unit and its calculation?


what is different when impergnated silica plates are used in separation of azo dyes using column chromatography?


What is the difference between known and unknown impurities?


As per ICH related substances stability trend limit from initial to shelf life


about method developement in hplc


WHY given much noise PDA dector then VWD Dector


Can we interpret accuracy from linearity in method validation?


how a particular wavelength can be different for a particular compund while analysing by uv and by HPLC.


please explian me about area normalisation method,diluted standard method,impurity vs impurity and which one has to be selected in method development