Can you please give a suitable definition and an example for understanding the words purity and potency.6 5698
What is column in chromatography?685
why we get negative values in uv when i placed sample which has some concetration but not in standard1 2850
how the compound separate in coulunm,explain871
why we use Dichlorobenzene.nitrobezine.t-butyldi sulhate.for calibration of gc Head space807
Why use the Omeprazole as a reference standard to estimate the assay of esomeprazole by HPLC method1 2011
are there in uv lamb that is chractrestic for wavelenghth 205 nm ?????614
In UV calibration we use Holmium perchlorate solution made in 1.4M perchloric acid The question is that 1.4 M perchloric acid we make is it in water or glacial acetic acid?4 5155
1)What's the meaning of Absorption,give a example. 2)What's the meaning of Adsorption,give a example. 2)what is the difference between Absorption and Adsorption.
I have compare C2H2-air and C2H2-N2O flame AAS on determination calcium. Both use same range of std to plot calibration curve. (2-6ppm) When i measure the sample with phosphate, KCl and LaCl, C2H2-N2O flame give false positive result, around 0.5ppm. When i measure the sample with phosphste, KCl and EDTA. C2H2-N2O flame also give 0.5ppm false positive. But both above mentioned sample would not give false positive when measured by C2H2-air flame. What is the reason?
In HPLC (Waters) software Empower1,2 &3 what is the updation for each version
what is turbidimetric titration?Give 2 examples.
What is the acceptance criteria for moisture balance when calibrated with sodium sulfate
how a particular wavelength can be different for a particular compund while analysing by uv and by HPLC.
What is intact assay method development.....?
for heavy metal test lead used in which form pure form or any other form for preparation of lead standard sol
process of Diclofenac sodium,IP.
effect of Ph during analytical run ?
why we use a particular hplc column for a particular compound give reasons?please
What are usp limits for theoritical plats,resoution,tailing factor,peak to valley ratio
How would you decide dissolution medium for NCE compound of class I drug
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?
what type of question will ask in the interview of lab chemist.