Analytical Chemistry Interview Questions
Questions Answers Views Company eMail

In dissolution test s1 stage we are getting one bowl 40 % out of 6 bowls what is the root cause you find and how proceed next step? ( Q is 80%)

Reddy Labs,

1 1310

why we inject sample TWICE in ASSAY by HPLC analysis but in RS once?

Aurobindo, Neuland, DRL,

4 6512

What id the resolution factor

1 2102




what is a placebo peak

GMP Pharma, Optimus,

2 2764

what is the effect of injection volume calculate flow rate in perkin elmer headspace? (ccm parameter in HS)

1 933

How can we calculates the solubility of the drug in different medias by injecting in to hplc????(solubility studies)

Super Pharmaceuticals,

2 2123

What is the use of Holmium (III) Oxide???

Finar Chemicals,

1 2995

India is. Under which zone as per QF1.?

Aurobindo, Gland Pharma, Acebright,

4 7973




how to calculate the Step and ripple accuracy for pump gradient test for UPLC?

Wockhardt,

1 3926

why salicylic acid not use for dissolution.

Cipla, Indo Baijin Chemicals,

1 2891

Which water can use Hplc analysis

Dr Reddys, BioGenomics, Reddy Labs,

9 6254

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

719

what is the analytical procedure for COD and BoD

Dai-Ichi,

1 2423

Why pH lies between 0 to 14 only

PI Industries, Unimark Remedies,

4 6425

In chromatograpbic purity 90% is there, in assay 70% is there. How will you prove remaining 30%.

Dr Reddys,

3 4729


Post New Analytical Chemistry Questions






Un-Answered Questions { Analytical Chemistry }

why disodium tartarate used in karl-fischer instrument ?.

717


How to check hplc detecter sensitivity?

233


What is viod volume and peak purity in HPLC?

1349


How you develop a method in HPLC?

1292


why does used dry caffien in HPLC calibration?

587






How to decide assay range for non pharmacopeial API analysis by HPLC? Could you give me any reference for same e.g Guidelines or Paper publications?

1861


What is diffrence between extractable volume and deliverable volume? Answer pls

819


why are measure gas flow " ml " in Gas chromatography

365


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

863


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

324


can i use hplc detector to uplc and why?

944


acceptance criteria for lod & loq by standard deviation of response and slope??

1185


what is the importence and role of LCMS and LCMS/MS and their applications? which type of compounds are analysis by lcms?

2297


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

1322


How to start the dissolution development for unknown tab?

306