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 1417

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

Aurobindo, Neuland, DRL,

4 6738

What id the resolution factor

1 2238




what is a placebo peak

Optimus, GMP Pharma,

2 2994

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

1 1029

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

Super Pharmaceuticals,

2 2242

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

Finar Chemicals,

1 3107

India is. Under which zone as per QF1.?

Aurobindo, Gland Pharma, Acebright,

4 8535




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

Wockhardt,

1 4252

why salicylic acid not use for dissolution.

Cipla, Indo Baijin Chemicals,

1 3050

Which water can use Hplc analysis

Dr Reddys, Reddy Labs, BioGenomics,

9 6479

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

771

what is the analytical procedure for COD and BoD

Dai-Ichi,

1 2566

Why pH lies between 0 to 14 only

PI Industries, Unimark Remedies,

4 6687

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

Dr Reddys,

3 4882


Post New Analytical Chemistry Questions






Un-Answered Questions { Analytical Chemistry }

Why we used in n-butyl acetate water content terminology while in ethyl acetate we used moisture content terminology?

604


Why perchloric acid used for potentiometric titration

1360


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

1285


In dissolution of tablets/capsules elaborate the Dissolution limit 20.0% to 60% Q in 30 minutes.

782


why we use Dichlorobenzene.nitrobezine.t-butyldi sulhate.for calibration of gc Head space

994






in dissolution why pool sample needed? in which type of drug pool sample need?

1884


How much is the standard area for glc analysis

997


What is the exact reason to use THF and IPA in buffers of Reverse phase HPLC as a solvent?

2567


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

2167


how to get accurate result for Residue on evaporation in purified water

342


what is the extinction coefficient for Indomethacin or at 319nm wave length.

2625


Why potassium dichromate is used in calibration of uv?

379


can i use hplc detector to uplc and why?

1007


For limit test of heavy metals in BP, Method C require that the substance is ignited at a temperature not exceeding 800 °C. Why confines such the temperature?

2539


is it necessary to do HPLC calibration at wavelength 315nm if we are doing analysis at this wavelangth

626