Analytical Chemistry Interview Questions
Questions Answers Views Company eMail

why urasil use in hplc column perfomance?

Bayer,

1 7480

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

Strides,

1 3543

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

Adley, Micro Labs,

2006

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

2085

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

1 9154

why using the ph 4,7,9.2?

SRF,

1 5217

What is Temperature ?

Reddy Labs,

2 9545

What is the column performance and column efficiency?

Reddy Labs,

1 10229

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

Reddy Labs, Unichem,

3 16387

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

Apotex,

6 11821

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,

1971

what is the difference between lod and loq?

Apotex, Aurobindo,

4 34956

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

FDC, Laurus, Pharmaceutical,

1748

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

Dr Reddys,

1 4108


Post New Analytical Chemistry Questions

Un-Answered Questions { Analytical Chemistry }

what is the extinction coefficient for Indomethacin or at 319nm wave length.

3509


What is similarity factor?

708


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

1367


can i use hplc detector to uplc and why?

1800


what is biorelivent dissolution media?

292






how pda detector works over uv?

274


What are usp limits for theoritical plats,resoution,tailing factor,peak to valley ratio

1327


pharma industries oriented

1676


Ratio of Water and Acetonitrile(diluent) is not recommended to use in cleaning method validation,why?

2461


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

1819


in DMF having extra impurities and in api COA also having extra imp than USP or BP product then how require to proceed?

336


Related substance method equivalency on control sample or spiked sample?

295


how you determine moist.of NaOH sol or NaOH flacks

1762


why require to do water content for drug product?

306


How do we fix the sample concentaryion in hplc method development?

655