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Analytical Chemistry Interview Questions
Questions Answers Views Company eMail

why urasil use in hplc column perfomance?

Bayer,

1 9092

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

Strides,

1 4641

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

Adley, Micro Labs,

2597

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

2664

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

1 10184

why using the ph 4,7,9.2?

SRF,

1 6257

What is Temperature ?

Reddy Labs,

2 10751

What is the column performance and column efficiency?

Reddy Labs,

1 11169

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

Reddy Labs, Unichem,

3 17987

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

Apotex,

6 14536

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

Dr Reddys, Indoco Remedies, Natco,

2789

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

Reddy Labs,

2506

what is the difference between lod and loq?

Apotex, Aurobindo,

4 37601

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

FDC, Laurus, Pharmaceutical,

2276

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

Dr Reddys,

1 5255


Post New Analytical Chemistry Questions

Un-Answered Questions { Analytical Chemistry }

Home heating oil or furnace oil what is made from? Can (base oil plus diesel/kerosen) = home heating oil?

2229


Loss of linearity in tkn analysis, possible reasons?

1363


how to select short coloum and long coloumn for new molecule

2522


Why potassium dichromate is used in calibration of uv?

2038


In Assy by potentio metry titration method how select MET U ,DET U, SET U,

2241


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

2359


Why only Copper standard is used to calibrate Atomic Absorption spectrophotometer?

2784


what is the structure of DOWEX-50

5561


What is control room temperature and which guide line says?

1695


why does used dry caffien in HPLC calibration?

2078


USP methodology, EP methodology, IP methodology, among three if possible to use one methodology for qualify working standard to use USP, EP, IP ? Please explain...

2070


4. Describe the operation of the Craig apparatus. Chapter.3 Equilibrium Processes in Separations

2768


What is the diference between residual solvents and organic volatile matter

2109


about method developement in hplc

1759


can we use the same detector in HPLC as well GC and what could be the differences we can find in the final chromato graph in any aspects?

2224