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what is the defferance between the potency and working standard
Arbro Pharmaceuticals, Caplin Point, ECOlogics, Matrix, Orchid, Venus Remedies,
1 6002From peak purity spectrum, where or at which point peak purity angle & purity threshold is checked?
1 4438water is more polar than acetonitrile.but in reverse phase chromatography peaks elute earlier when we increse Acetonitrile.what is the reason.
10 52404I got 88.0 % assay for a drug in HPLC analysis for same injection i got 40.0% related substances is it possible? what is the relation between results of assay and purity?
5 11726hi i am m.sc organic chem and complete analytical lab tech dipolma now job in qc many time ask question you in m.sc organic why job in qc please help me i can not give proper ans please tell me
3 11011Post New Analytical Chemistry Questions
what is the structure of DOWEX-50
how much mass should be there in volumetric flask while in preparation of sample for assay?
USP methodology, EP methodology, IP methodology, among three if possible to use one methodology for qualify working standard to use USP, EP, IP ? Please explain...
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 potassium dichromate is used in calibration of uv?
Related substance method equivalency on control sample or spiked sample?
How we performed the force degradation for drug substance, is any specific guideline is available for each parameter(Acidic, basic, oxidation,heat)? what conditions you mentained for above parameters.
in which situation require to use paddle and basket?
what parameters we will consider while developing a HPLC method and how we confirm our HPLC method is valid?
In IR spectra, generally a molecule vibrates without apply emr or ir light?
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?
Is it nessesary all multimedia dissolution require descriminatory?
in which situation ion pair agent require to use?
Basic principle of ESI?
Why we select scan range from higer wavelength to lower wavelength in uv visible spectroscopy and ftir spectroscopy ? .
