Analytical Chemistry Interview Questions
Questions Answers Views Company eMail

What is the difference between kf  and LOD

Enaltec Labs,

5 16047

What is chiral and why this performing in HPLC

Hetero, Macleods,

4 15457

How to Calibrate NMR instrument ?

Reddy Labs,

1 3169

what is difference b/w spectroscopy, Spectrometry and Spectrophotometry ?

Reddy Labs,

1 9549

Hello Dear all; I have a technical question related to analytical Chemistry, I have a sample of (40% w/w) Ferric Chloride solution (for water treatment purposes which consist a little portions of Ferrous Chloride and Hydrochloric acid. I need to know the methods to determine the percentages of each Ferrous Chloride and Chloride acid. Also I want to make sure that this solution is truly (40% w/w). So ANY CLUE !!! Thanks in advance.

2 2115

What is the meaning of 624 in DB-624 Capillary column used in GC?


4 15344

In Agilent HPLC calibration using Empower 3 Software, What is the criteria for GPV Baseline starting point? i.e., Either it can start from -0.00/+0.00 or any range is there like -0.05 to +0.05 or ......etc?


1 3825

using gradient pressure in gas chromatography are not ?using gradient pressure why



What is the difference between STANDARDIZATION and CALIBRATION of instrument like KF? why do we standardization of KF everyday? Why the KF factor being only 5.02 etc? 

AlpaMed, Vergo pharma research,

5 19507

What is Formula of Potency calculation on Dried basis, As is basis& Anhydrous basis.

Laurus, Teva API,

10 48109

Why base line not start from zero in GC Chromatography analysis.


1 3652

Please tell me about the pH of Polycaboxylic ether is it in the 5-6 range ever or more than 6

Apex Encon Projects Private Limited, Cipla,


can i use hplc detector to uplc and why?

Mylan, SGS,


what is the maximum flow rate in prep hplc

Meril Life Science,

1 1311

how will you do the prep for unstable componds?

Piramal Healthcare, CTX Life Sciences, AMRI,


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Un-Answered Questions { Analytical Chemistry }

what is third integration


what is peak purity and its formula


what is the importance of peak purity in HPLC and how we can calculate through manul(not software)?


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


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


What is the principle of HPLC, GC, LCMS, GCMS,LC QQQ, GC QQQ, LC Q TOF and GC Q TOF. What are the applications and Specificity?


Why perchloric acid used for potentiometric titration


In BP2013, Loperamid HCl monograph. Assay by titration with 0.1N sodium hydroxide using hydrocloric acid 0.01N and reading the volume added between the 2 points of inflexion. I have a question that if the diluent solvent is ethanol is certainly consumed a amount of volume of titrant, so this volume must be eliminated on the result calculation or not apart from first point which is subtracted above.


can i use hplc detector to uplc and why?


Principle of single pan analytical balance


If we do accuracy at same concentration at which linearity planned,what is the need to do linearity separately?


What is the acceptance criteria for moisture balance when calibrated with sodium sulfate


How to determine water content of bis tetrazole amine mono ammonium salt


function of detecter in hplc ,gc and spectroscopy? function of carrier gas in gc?


Why only hydroxy naphthol blue indicator is used for standardisation of 0.05M EDTA solution instead of solochrome Black T or Euriochrome Black T indicator which is used for all sample analysis with 0.05M EDTA solution?