Difference between uv detector nd RI DETECTOR? wt s the difference between OVI Solvents nd residual solvents incase of GAS CHROMATOGRAPHY? nd wt s its detection limit?3 11354
on what basis SOP's can be changed? IF mobile phase ratio is 70:30 to how much % can we change the ratio in HPLC process7 11439
Why caffeine as a reference standard used for calibration of HPLC?11 43568
What should be the precision for HPLC during technology transfer?3 6470
how do start hplc method development? how much sample required for developing the method development?3 41964
Wt s the use of linearity in HPLC method validation4 11679
which pharmacopeoia mentions that caffiene is used as a standard for HPLC calibration? which other standardscan be used for the same?1 5722
Why will a solution of aspirin without acid or basic hydrolysis give yellow colour with a solution of Ferric chloride?1 3740
Why do we use 0.005M h2so4 solution for preparation of k2cr2o7 solution for UV calibration?3 19904
In HPLC what is Single point threshold, peak purity index and minimum peak purity index? what should be consider for pure peak.3 22658
acceptance criteria for ph meter, hplc detector,pump,injector,oven when we calibrate.3 19223
is it necessary to do HPLC calibration at wavelength 315nm if we are doing analysis at this wavelangth
Why sodium hydroxide used for maintain pH of phosphate buffer
We use Potassium Dichromate solution for the calibration of UV-Visible Spectrophotometer in UV region. My question is to calibrate visible region which solution could be used in photometric accuracy
WHAT IS THE USE OF STARTER ?????????
What is column in chromatography?
about method developement in hplc
what is the different in Total ash, sulphated ash, acid insoluble ash, alcoholic or non alcoholic ash?
WHAT IS DIFFERENCE B/W MALTINGRANG/DSC
Tell me something about Vitamin A test method by HPLC
what is the difference between potentiometric titration and karl fischer titration?
As per ICH related substances stability trend limit from initial to shelf life
what is the importance of peak purity in HPLC and how we can calculate through manul(not software)?
How do we quantify crystaline and amarpous forms by using (NMR, XRD)spectroscopic techniques? Which any others instruments are useful for this quantification? explain
what type of question will ask in the interview of lab chemist.
How can I develope method of dissolution by HPLC OR UV