Analytical Chemistry Interview Questions
Questions Answers Views Company eMail

why reference flow required during hplc analysis on rid?

1 3321

why hydrogen and zero air used for flame ignition in gc?

1 6243

How we get DST moisture 15.4-16.0%. what is the calculation or method behind it.

2 13143

What is viod volume and peak purity in HPLC?


what is the results if we use ODScolumn instead of BDS column ,(ther parameter is same for column) in assay method ?

3 6539

How we performed the force degradation for drug substance, is any specific guideline is available for each parameter(Acidic, basic, oxidation,heat)? what conditions you mentained for above parameters.


what is the use of tap density apparatus? why we calculate it? what is the difference between the bulk density and tap density?

Alchemist, Alembic, Apex,

1 1908

from where i get mortar pastle for glass bottle crush? it's required for testing of it?


what is the procedure for cleaning of lenses of hatr accesory of ftir instrument?


What is the difference between void volume and delay volume in HPLC?

3 13912

What is the purpose of octyl silane columns?


how many types of Proceing methods?

Reddy Labs,

7 6646

What is the column performance and column efficiency?

Reddy Labs,

2 10690

What are the primary standards?

6 7884

why we want incorporate area of each solution of Intermediate precision and repeatability as well as Accuracy ? What is the use to incorporate area of each solution of Intermediate precision and repeatability as well as Accuracy ?

1 2502

Post New Analytical Chemistry Questions

Un-Answered Questions { Analytical Chemistry }

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


How to choose concentration of LOQ solutions for RS analysis? Example.


What is the principle of Thermal conductivity detector and FID?


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


could negative ions be produced by bombardment process in mass spectrometry?


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


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


what is procedure of actual procedure for registration of drug?


What is the difference between qualitative and quantitative analysis (hplc)


What is the formula to determine the concentration of M of a solution given the % transmittance? Use %T = 43.7 as an example.


In IR spectra, generally a molecule vibrates without apply emr or ir light?


Why sodium hydroxide used for maintain pH of phosphate buffer


what is the different in Total ash, sulphated ash, acid insoluble ash, alcoholic or non alcoholic ash?


During Validation study, Recovery is passing at all levels but Linearity is failing. Justify?


In HPLC Calibration, On which basis RSD Limit of noise test is fixed (NMT 33.0 % )