How did you conclude that when stressing a compond, all
degradation products have eluted in chromatogram?
Answer Posted / m.sivalingeswararao
By calculating mass balance.It should be equal to or nearer to 100%.%Decrease in mass balance indicates the % of Impurities not detected or not eluted. In some cases Degraded Impurities may not be eluted with in specified run time,in such cases they may elute in the next run ,hence it should be advisable to increase the run time.
| Is This Answer Correct ? | 1 Yes | 0 No |
Post New Answer View All Answers
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?
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?
[3/30, 13:29] Manoj P Venkatpurwar: How hplc column selection according to structure? How mobile phase buffer selection on molecule structure?
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,
Tell me about analytical method validation in QC
If we have 5 strength which is not dose proportinate and excipients also diffrent in each strength then how we can proceed for Force degradation? and excipient are same but not dose propotinate the how FD?
how you start the solubility study?
Please tell me about the pH of Polycaboxylic ether is it in the 5-6 range ever or more than 6
What is viod volume and peak purity in HPLC?
Which parameters require to do in tech transfer?
how you fix the limits of impurities?
What is intact assay method development.....?
what is mean by dissolution hydrodynamics?
analytical method validation require to with respect to release specification or shelf life specification?
if your impurity coeluting with each other in that situation how require to set specification? is it acceptable?