Analytical Chemistry Interview Questions
Questions Answers Views Company eMail

In my analysis by HPLC,In sample main peak and placebo peak are eluting with shorter resolution ( almost look like doublet). how can i get max resolution ? Is changing gradient method is usefull?

3 8121

what is the need of calulation of RRF of impurity in HPLC analysis?

9 21116

why SGF media used for dissolution . What is the use of it .can we use other media of lower pH instead ot this?

1 5925

what is difference between UV - VISIBLE MODEL NO like 1600,1601,1700 etc ? plz explain me

Graviti Pharmaceuticals,


How do we get end points and how many end points are possible for citric acid and di-acid not theorotically answer should be given practically.

Reddy Labs, Hetero,


only one end point is possible for citric acid and we get 2 end points for di acid why?

Reddy Labs,

3 5216

why kf factor coming 0.5

Alkem Labs,

5 11492

For Recent draft guidelines for Dissolution test apparatus calibration, why removing the salicylate tables?

Alkem Labs,

3 6350

How can v calibrate ftir ? Plz explain me


2 14120

what is the diff betwen calibration and system suitability?

8 12957

Why Methanol used in KF Titration?


15 46914

Why do we use 500ppb sucrose and 500ppb 1,4 benzoquinone in TOC calibration?


2 5600

why chiral separation?

1 5796

what is main use of primary standards in caliration

Lupin, Nectar Lifesciences, Lee Pharma,

2 2878

what are the important specifications for a Column ?

2 6875

Post New Analytical Chemistry Questions

Un-Answered Questions { Analytical Chemistry }

what is third integration


We use hicrome 10 cxs column in hplc analysis....pls tell me.. what is the meaning of 10 cxs?


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


wat is the role of michelson interferometer in FTIR and He-Ne lase.detailed answer required in simple language


Why irmoisture balance is used for corrugated box moisture testing


mode of absorption in alimentary canal?


How we can determine water content in piperazine


what is difference between zero air gas and o2 gas


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


What are usp limits for theoritical plats,resoution,tailing factor,peak to valley ratio


How can we calculate "confidence interval" in analytical method validation? Pl. explain with example.


In GC calibration,what is the procedure to calibrate the TCD (thermal counductivity detector)suggest ?


how can I make the copper get white bye any salt or acit?


What is the difference between known and unknown impurities?


Describe your field experience sample type collected,sample techniques,field measurements taken and equipment used?