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Analytical Chemistry Interview Questions
Questions Answers Views Company eMail

why urasil use in hplc column perfomance?

Bayer,

1 6824

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

Strides,

1 3083

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

Adley, Micro Labs,

1772

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

1687

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

1 8576

why using the ph 4,7,9.2?

SRF,

1 4548

What is Temperature ?

Reddy Labs,

2 8782

What is the column performance and column efficiency?

Reddy Labs,

1 9636

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

Reddy Labs, Unichem,

3 15070

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

Apotex,

6 10514

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

Dr Reddys, Indoco Remedies, Natco,

2027

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

Reddy Labs,

1736

what is the difference between lod and loq?

Apotex, Aurobindo,

4 32503

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

FDC, Laurus, Pharmaceutical,

1526

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

Dr Reddys,

1 3425


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Un-Answered Questions { Analytical Chemistry }

if content uniformity passing but dissolution varrying then what is next step?

9


what is the principle of UV Vis spectroscopy, AAS, ICP OES,ICPAES, ICP-MS and FTIR

7799


How to do regeneration of Metacarb Pb plus column?

1835


why multimedia dissolution require to do?

10


Why sodium hydroxide used for maintain pH of phosphate buffer

1545






i want model written test paper for the post of analyst in IOCL(indian oil corporation ltd) any one pls help me

1928


using gradient pressure in gas chromatography are not ?using gradient pressure why

2688


While performing TOC sst analysis Zero shift disabled & sample analysis zero shift enabled why?

1903


why we use glass fiber filters use in some situation?

17


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

1023


How to calibration of the uv spectroscopy and its test?

387


why glutent are detected in the rice cereal baby food product even manufacturer claimed that they are using rice and milk only?we have using ELISA to do the test,and rice supposed not containing any glutent,rite?We already repeat the test so many times and it still detected.just wondering where the glutent came from?

1991


For standardization of volumetric solutions, acceptance limit for concentration is considered as 10% of nominal concentration and %RSD as NMT 0.2% (for appropriate no. of replicates). But , if %RSD has not met, what should be further action?

785


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

1772


How to determine the EDTA content by potentiometry titration in Ceftriaxine sodium

1633