Analytical Chemistry Interview Questions
Questions Answers Views Company eMail

why urasil use in hplc column perfomance?

Bayer,

1 7310

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

Strides,

1 3387

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

Adley, Micro Labs,

1911

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

1954

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

1 8950

why using the ph 4,7,9.2?

SRF,

1 5042

What is Temperature ?

Reddy Labs,

2 9290

What is the column performance and column efficiency?

Reddy Labs,

1 10028

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

Reddy Labs, Unichem,

3 16027

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

Apotex,

6 11417

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

Dr Reddys, Indoco Remedies, Natco,

2179

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

Reddy Labs,

1887

what is the difference between lod and loq?

Apotex, Aurobindo,

4 34410

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

FDC, Laurus, Pharmaceutical,

1662

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

Dr Reddys,

1 3882


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Un-Answered Questions { Analytical Chemistry }

pharma industries oriented

1579


if tech transfer fails whay require to do?

207


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

2210


in dissolution if one bowl got 70 percent 2nd bowl got 80 percent and 3rd bowl got 90 percent then how proceed?

226


why we use glass fiber filters use in some situation?

230






how to select short coloum and long coloumn for new molecule

1733


how require to fix the linearity and accuracy cincentration range?

467


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

262


Please tell me about the pH of Polycaboxylic ether is it in the 5-6 range ever or more than 6

2011


if identification threshold crosses the limits then what next step?

233


What is the Formula for coreletion coefficient in plhplc calibration

1113


acceptance criteria for lod & loq by standard deviation of response and slope??

1964


why cone formation during dissolution?

202


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

1887


why lactose has less charges when packed in steel containers when compared with packing of lactose in polyamide material?

1659