Analytical Chemistry Interview Questions
Questions Answers Views Company eMail

how to calibrate hplc & gc

Cipla,

3055

Explain in detail what are the procedure and calculations involved for accuracy (%Recovery)in method validation?

Vimta Labs,

1 4275

WHAT IS DIFFERENCE BETWEEN RRT AND RRF IN HPLC

Cadila,

2 38524




what is mean by Q in S1 and S2

Micro Labs,

3 7120

what is the difference between mcg and ppm?

5 19222

WHAT IS THE DIFFERENT BETWEEN PURITY, POTENCY AND ASSAY

Hetero, Glochem,

5 41254

How we can perform Linearity study for validation by HPLC with very low conc of sample

1 4910

principle of FTIR

Biocon, Macleods,

2 12684




what is separation techniques.

Glenmark,

1300

what is the difference b/w repeatability nd reproducibility ?

Aptuit Laurus,

1 7238

why using factor 1.00639 in burette calibration of kf

Cipla,

1 5921

what type of questions asked on analytical balance and also give answers................all pharma companies?

Sun Pharma,

5714

Why KBr is used in FTIR ?

6 9872

How to study genotoxicity of impurities in API?

NCL,

2 2886

What is the difference between chiral cel OD-H & OD-RH ?

Aptuit Laurus,

3 7397


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Un-Answered Questions { Analytical Chemistry }

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

632


How can we confirm the HPLC column is end-capped or not? Is it possible to identify by physical appearance?

1781


How to determine water content of bis tetrazole amine mono ammonium salt

1854


what is definition of validation? which components are followed give detail?

842


how to calibrate hplc & gc

3055






we are performed SOR for a particular product the limit is -6 to -10.We face particular bathes it is not meeting the specification.we performed diffrent instrument diffrent analyst we are getting diffrent diffrent results.solvent is dimethyl sulfoxide what could be the reasion

434


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

1040


if you have given a blank water how you analyse by general analytical techniques?

654


how to get accurate result for Residue on evaporation in purified water

222


What is the exact reason to use THF and IPA in buffers of Reverse phase HPLC as a solvent?

2430


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

944


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

1343


can i use hplc detector to uplc and why?

891


about method developement in hplc

348


What is the difference between known and unknown impurities?

190