what is the meaning of linearity,principle of co-relation coefficient?3 5811
how can we determine RRF value in HPLC FOR CALCULATION OF IMPURITY ?4 37264
In UV we measure absorbance , how it is happend ? explain me4 6770
why we are performing residue on ignition?6 11729
why we are performing residue on ignition?2 6501
NMR is both qualitative and quantitative?EXPLAIN2 4016
HOW TO CALCULATE THE MASS OF UNKNOWN IMPURITY IN LC-MS? AND WHAT IS THE ROLE OF FRAGMENTATION IN LC-MS ?1 3829
how to selecet an exact coloumn for an new molecule development by hplc how to select exact salt as buffer for new molecule development by hplc what is the the process to select the mode of saparation of compoundes by hplc what is the use of ph of buffer what is use of buffer,ph,organic phase,ans methods how the molecules get saparated in coloumn,
what is weight veriation in pharma industry ? plz explain me
What is Band broading effect explain
Which is the highly polar and highly non polar column in HPLC?
what is partion and column chromatography
what is the extinction coefficient for Indomethacin or at 319nm wave length.
What is column in chromatography?
AT WHAT CONDITIONS WILL YOU ANALYSE A SAMPLE,WHICH ARE PRESERVED AT OTHER THAN THE AMBIENT CONDITIONS?(ie COLD STORAGE SAMPLES BELOW 20* CENTIGRADE?
How to start the dissolution development for unknown tab?
for heavy metal test lead used in which form pure form or any other form for preparation of lead standard sol
Describe your field experience sample type collected,sample techniques,field measurements taken and equipment used?
What is the calibration of uv process and preparation
My question about gas chromatography sulfur chemiluminsecence detector. I test unknown sample gas by GC-SCD (calibrated ) and the result of *H2S is 279 PPM , *but when I test the same sample with the GC-TCD (calibrated ) the value of *H2S is 2500 PPM . I'd like to inform you that both GCs are calibrated and have very good operation conditions with stable parameters . the question is if the sample gas with higher H2S over detection limits of SCD detector (1000 ppm). why the result it 279 ppm Best regards
What is aggregate and fragments in SEC?
How do we get end points and how many end points are possible for citric acid and di-acid not theorotically answer should be given practically.