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In pharmacopeal solibility parameter of a material, is et essential to test all paramete? If 70-75% parameter passes can we assess that the material is satisfactory or not?
1 5473Why triethylamine and o-phosphoric acid used while setting pH of mobile phase during HPLC Analysis?
6 34091why RID detector is used for selective materials like Mannitol, Hydroxyethyl Starch and Sorbitol?
5 12828For Dissolution test why we are Performing 6 Bowls why not more.any were mentioned or in what basis we are performing? --------Veerabhadrarao.M
2 12373In Number of Theoretical Plates (N) = 16 (tr/w)2. where tr: retention time, and W: peak width. My Question is here in formula what is 16.Can u explain briefly? ---Veerabhadrarao.M
3 19763A new drug substance found fail to meet specification for an unknown Impurity during stability study(Specific change),how would further proceed?
2 7538Post New Analytical Chemistry Questions
what is the procedure for cleaning of lenses of hatr accesory of ftir instrument?
is it necessary to do HPLC calibration at wavelength 315nm if we are doing analysis at this wavelangth
What is the Formula for coreletion coefficient in plhplc calibration
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
mode of absorption in alimentary canal?
What is dose dumping? why require to do?
What is related substance by HPLC impurity limits as per USP?
if peak get problamatic then what require to do?
in monograph 7 imp are there but in vendor showing 5 imp do not req to include 2 imp for that what will be justification?
in which situation require to change rs specification?
before starting analytical method valodation what you checking? and how giving preference to start validation?
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 is %labelled amount in content uniformity of dosage unit and its calculation?
why glutent are detected in the rice cereal baby food product even manufacturer claimed that they are using rice and milk only?we have using ELISA to do the test,and rice supposed not containing any glutent,rite?We already repeat the test so many times and it still detected.just wondering where the glutent came from?
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.
