Analytical Chemistry Interview Questions
Questions Answers Views Company eMail

what is dwell volume in HPLC?

Aurobindo, Sun Pharma, SUN, Cadila, Strides,

2 4020

what does pH stand for?

Orchid,

4 4094

Definition of beers_ lamberts law

Agio Pharmaceuticals, Aarti Industries, Emcure, Supriya Lifescience,

4 3263




Why monograph of hplc coming upperside of drift but in IR monograph coming in drift side?

1 1843

Why a1% value is used for some product ? What is the criteria for selection a1% value ?

Zim Laboratories,

925

Why the ph limit (1_14) Is used?

Cipla,

3 4272

What is cut off value of solvent used in hplc

Pfizer,

1 3265

How to calculate mass balance in RS after degradation

Reddy Labs,

1 2436




if out of two set of results of moisture analysis first 1 is passing, second one is failing, is it oos ? or vice a versa first 1 is failing and second one is passing. for information mean value to be reported and in mean value the substance is ppassing, is it oos or normaal mean value to be considered?

JBCPL,

1 1520

Can we interpret accuracy from linearity in method validation?

Lupin, Dr Reddys,

733

What is aggregate and fragments in SEC?

627

how pyridine can be analysed other than GC?

1 1957

What is the calibration of uv process and preparation

Aurobindo,

672

How to prepare 1000ppm methylene blue solution

2 3589

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

College School Exams Tests,

662


Post New Analytical Chemistry Questions






Un-Answered Questions { Analytical Chemistry }

What is third generation HPLC Columns?

689


what is impurity profile. how to interpret this impurity profile to a drug product or drug substance.

1026


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

962


please explian me about area normalisation method,diluted standard method,impurity vs impurity and which one has to be selected in method development

308


Why we used in n-butyl acetate water content terminology while in ethyl acetate we used moisture content terminology?

540






process of Diclofenac sodium,IP.

859


explain 5 components of gas chromatography ?

638


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

2531


what is peak purity and its formula

180


in gas chromatography what is the difference between gas flow rate and average linear velocity ?

990


How can I develope method of dissolution by HPLC OR UV

954


Why sodium hydroxide used for maintain pH of phosphate buffer

909


What is the calibration of uv process and preparation

672


what is the origin to prepare standard operating procedure

945


How to compare XRD graphs against standard and carry polymorpism study of API's by powder XRD method?

2549