Analytical Chemistry Interview Questions
Questions Answers Views Company eMail

why urasil use in hplc column perfomance?

Bayer,

1 7496

how do you perform reverse enginearing study for drug containing sodium chloride sodium citrate sodium bicarbonate

Strides,

1 3556

How will u perform degradation study in detectors other thann PDA in HPLC Methodology

Adley, Micro Labs,

2014

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

2094

what is the working priniciple of ph, what are parts in ph meter

1 9169

why using the ph 4,7,9.2?

SRF,

1 5239

What is Temperature ?

Reddy Labs,

2 9555

What is the column performance and column efficiency?

Reddy Labs,

1 10240

why we are using in ph calibrations ph4,7,9.2 buuffers only?

Reddy Labs, Unichem,

3 16404

Is it necessary to validate both assay and related substances for usp official methods for products.

Apotex,

6 11823

why we use a particular hplc column for a particular compound give reasons?please

Dr Reddys, Indoco Remedies, Natco,

2263

IS THERE ANY EQUIPMENT TO CHECK AND CALCULATE THE POLARITY OF A LIQUID?

Reddy Labs,

1977

what is the difference between lod and loq?

Apotex, Aurobindo,

4 34976

What should be the level/ Percentage of Arsenic in Arsenic free zinc.

FDC, Laurus, Pharmaceutical,

1751

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

Dr Reddys,

1 4113


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Un-Answered Questions { Analytical Chemistry }

What is the acceptance criteria for moisture balance when calibrated with sodium sulfate

1542


if rsd failed then what require to do?

314


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

1832


How to compare XRD graphs against standard and carry polymorpism study of API's by powder XRD method?

3383


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

1516






what is the purge flow & how to calculate

1968


Tell me about analytical method validation in QC

5533


in which situation require to use paddle and basket?

280


How to establish relative response factor for hplc. Why it is required?

695


How can the GC or HPLC method is selected to determine the impurity profile in drug product?

6857


IS THERE ANY EQUIPMENT TO CHECK AND CALCULATE THE POLARITY OF A LIQUID?

1977


In Dissolution Test why limit is define Q+5% what is the role of +5%.

2565


HI,I CLEARED BOB CLERK EXAM. MY INTERVIEW WILL BE ON 9TH OCTOBER,2010.PLEASE SEND ME INTERVIEW QUESTIONS AND ANSWERS. THANK YOU.

1731


How to fix the sample conc. in Related substances test by HPLC?

605


What is rs test why we are performing rs test?

1299