Analytical Chemistry Interview Questions
Questions Answers Views Company eMail

why water content test performed

1 3816

What is peak purity and response factor in chromatographic analysis? Why we required to find out response factor?

2 4038

What are modes of quantification in related substances

Hospira,

961




what is the source of ir spectroscopy

Mylan, CTX Life Sciences,

2 4587

Difference Between End Cap HPLC Column and Non End Cap Column

2 8832

Which type of column should i use to check the purity of high molecular weight protein using HPLC reverse phase column chromatography? Hi everyone. I wanna to check the purity of high molecular weight protein (collagen) with MW of ~130 kDa using a HPLC. I know C18

Petronas, Shanghai Ocean University,

732

How would you decide dissolution medium for NCE compound of class I drug

809

What is the principle of hplc detectors like.. UV detector,flurosence detector, RID?

Cipla,

1343




What is the principle of Thermal conductivity detector and FID?

Cipla,

1500

why 6 tablets use for dissolution

Teva Pharmaceuticals, Cadila, IPCA, SUN,

1 2030

What is the limit of minimum area in in hplc RS anlysis

Lupin,

1 2854

how many types oos and oot

1 2155

what is icdas abbrivation

1 2119

Why should we use Potassium iodide and Hydrochloric acid during preparation of Iodine Molar solution?

1 1903

How can you calculate manually "Slope" in pH calibration?

Hetero,

2 12270


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Un-Answered Questions { Analytical Chemistry }

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

1735


WHICH STANDARD WE USE IN SILICA ANALYSIS IN SILICA-GEL METHOD FOR SOLID SAMPLE

935


Did anybody have method for acetyl cysteine effervescnce tablet

956


What is stray light in uv what are units for stray light

321


what is the origin to prepare standard operating procedure

1032






How to choose the which salt is suitable for mobilephase

1764


if you have given a blank water how you analyse by general analytical techniques?

786


how to selecet an exact coloumn for an new molecule development by hplc how to select exact salt as buffer for new molecule development by hplc what is the the process to select the mode of saparation of compoundes by hplc what is the use of ph of buffer what is use of buffer,ph,organic phase,ans methods how the molecules get saparated in coloumn,

1189


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

1158


why are measure gas flow " ml " in Gas chromatography

447




1123


iam usig ph buffers merk. manually how to prepare ?

1048


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

1354


what is the limit for KF Factor ,we take factor using water we will found factor between 6 to 7 ,while on KF Reagent bottle mentioned 5 mg/ml water content.if we not use dried methanol it is effect on factor.

772


Tell me something about Vitamin A test method by HPLC

1428