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 13709
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 14042
Why caffeine as a reference standard used for calibration of HPLC?11 50662
What should be the precision for HPLC during technology transfer?3 7988
how do start hplc method development? how much sample required for developing the method development?3 49992
Wt s the use of linearity in HPLC method validation4 14078
which pharmacopeoia mentions that caffiene is used as a standard for HPLC calibration? which other standardscan be used for the same?1 7501
Why will a solution of aspirin without acid or basic hydrolysis give yellow colour with a solution of Ferric chloride?1 4561
Why do we use 0.005M h2so4 solution for preparation of k2cr2o7 solution for UV calibration?3 22865
In HPLC what is Single point threshold, peak purity index and minimum peak purity index? what should be consider for pure peak.3 27925
acceptance criteria for ph meter, hplc detector,pump,injector,oven when we calibrate.3 22388
from where i get mortar pastle for glass bottle crush? it's required for testing of it?
which are the diffrent batches in the pharmaceuticals?
For standardization of volumetric solutions, acceptance limit for concentration is considered as 10% of nominal concentration and %RSD as NMT 0.2% (for appropriate no. of replicates). But , if %RSD has not met, what should be further action?
UV and PDA detector, which have less signal to noise ratio?
please explian me about area normalisation method,diluted standard method,impurity vs impurity and which one has to be selected in method development
IS THERE ANY EQUIPMENT TO CHECK AND CALCULATE THE POLARITY OF A LIQUID?
While performing TOC sst analysis Zero shift disabled & sample analysis zero shift enabled why?
what is the principle involved in turbidometry and nephelometry ?
Why we used in n-butyl acetate water content terminology while in ethyl acetate we used moisture content terminology?
AT WHAT CONDITIONS WILL YOU ANALYSE A SAMPLE,WHICH ARE PRESERVED AT OTHER THAN THE AMBIENT CONDITIONS?(ie COLD STORAGE SAMPLES BELOW 20* CENTIGRADE?
Why perchloric acid used for potentiometric titration
why are measure gas flow " ml " in Gas chromatography
Why only 1.2 million lux hours require in photostability study?
Qc interview questions
calibrtion procedue of LC-MS