Analytical Chemistry Interview Questions
Questions Answers Views Company eMail

how to prepare solution in ppb

6 13790

how to prepare low ppm solution from high ppm solution ?

1 7531

wt is difference between assay and purity in hplc?

Hetero, IDRS Labs,

9 71457




difference between AAS & flame photo meter ?

3 30704

how to calibrate AAS ? give me the procedure?

3 11763

why peak purity not considered in GC?

DRL, Reddy Labs, Vimta Labs,

4 12178

from compund pka value how to select buffer and column?

Emcure, Zydus Cadila,

2 6746

what is Beer Lambert low ?

MAN,

8 11412




principle of AAS & its uses ?

Auriga,

1 3177

how ir specrometer is calibrated ?

1 4095

what is pKa ?

Dr Reddys, Shasun Chemicals,

10 14156

How you can calculate pKa ?

Dr Reddys,

6 12983

what buffer you can select for acidic nature analyte and how ?

Dr Reddys,

2 10689

What is Specificity ?

Dr Reddys,

8 10365

Whya the need of Specificity to do in Analytical Method Validation ?

Dr Reddys,

5 11028


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Un-Answered Questions { Analytical Chemistry }

Colorimtry

252


can i use hplc detector to uplc and why?

977


Why to use propyl paraben in HPLC gradient calibration

713


Why dissolution test is not performed in all of the products

1213


what is difference in ods I ods II is this is realy from sorbent / packing characteristics or from other means

731






What is the principle of Thermal conductivity detector and FID?

1451


What is the purpose of octyl silane columns?

2710


in dissolution in one tablets two molecule one is losartan & second is HCTZ losartam is complies in s1 stage & hctz is complies in s2 stage then how to report result losartan s1 stage result or losartan s2 stage result

930


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

1263




1076


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

2583


what is the procedure for cleaning of lenses of hatr accesory of ftir instrument?

1085


In Dissolution Test why limit is define Q+5% what is the role of +5%.

1510


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?

2495


about method developement in hplc

412