Analytical Chemistry Interview Questions
Questions Answers Views Company eMail

why we use x terra columns at higher ph ?

Hetero,

2 7891

what is dead time in hplc?

Orchid,

3 14312

what is the difference between melting range & melting point? Which is more significant?

5 22467




what is the significant of pH in HPlc?

Orchid,

5 10270

what is weight veriation in pharma industry ? plz explain me

1 1008

How to now that my acid is contact with base or base is contact with acid in drugs, is there any techniq to identify the formation of salt(drug)

Reddy Labs,

2 4410

what is least count of a balance? How we find out this? Any formula for least count of Analytical balance?

Dr Reddys, Reddy Labs, Analytical Solutions,

11 65391

Explain about Low pressure gradient and High Pressure gradient systems in HPLC?

Mylan, Orchid, Roshanico,

4 19558




what is protocol ? plz Explain me

5 8070

How can we confirm the HPLC column is end-capped or not? Is it possible to identify by physical appearance?

JBCPL,

1809

HPLC Calibration was done in Reverse Phase, but not in normal phase why explain?

Cipla, Orchid,

11 22837

what are the standard methods for HPLC?

Orchid,

1474

What is the procedure for investigation of an OOS (Out of specification) results?

Reddy Labs, Dr Reddys, Biocon,

4 15350

How do you give training to a new chemist

Reddy Labs,

3 7438

what is the Bracketing & Matrixing.

Ranbaxy, Dr Reddys,

8 34592


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Un-Answered Questions { Analytical Chemistry }

How you develop a method in HPLC?

1255


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

1901


USP methodology, EP methodology, IP methodology, among three if possible to use one methodology for qualify working standard to use USP, EP, IP ? Please explain...

520


What is gelatinization?

353


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

225






What is the calibration of uv process and preparation

648


Why dissolution test is not performed in all of the products

1159


How can I develope method of dissolution by HPLC OR UV

945


why equlirium conatant of water have 14 value

885


why lactose has less charges when packed in steel containers when compared with packing of lactose in polyamide material?

923


Why do we use KMnO4 in the test of control of obsorbance ? and why do we take specific quantity i.e 57-63mg?

1260


WHAT IS THE USE OF STARTER ?????????

1060


mode of absorption in alimentary canal?

1124


What is AV value in test uniformity content ,describe calculation

19


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.

1571