Why caffeine as a reference standard used for calibration
of HPLC?
Answer Posted / neelam tyagi
it shows maxima at the multi wavelength of 205 nm and 273
nm shows and shows minima at the wavelength of 245
nm. It is a Primary reference standard andvery easily
avaliable
in the market .It is cheap.It is non-degradable
and we can used it for longer period of analysis it is very
highly stable
| Is This Answer Correct ? | 2 Yes | 0 No |
Post New Answer View All Answers
effect of pore size, pore volume, partical size, column length, carbon load on retention time? what is carbon load? what is the use?
[3/30, 13:29] Manoj P Venkatpurwar: How hplc column selection according to structure? How mobile phase buffer selection on molecule structure?
What is the difference between Discriminating media and DPDM(Dissolution Profile with Different Media)
Why we select scan range from higer wavelength to lower wavelength in uv visible spectroscopy and ftir spectroscopy ? .
We use hicrome 10 cxs column in hplc analysis....pls tell me.. what is the meaning of 10 cxs?
why digestion require in icpms?
if your impurity coeluting with each other in that situation how require to set specification? is it acceptable?
which are the diffrent batches in the pharmaceuticals?
Why use only methanol,used determinationof moisture content not use other solvents
what is the difference between potentiometric titration and karl fischer titration?
what is the procedure for cleaning of lenses of hatr accesory of ftir instrument?
before starting analytical method valodation what you checking? and how giving preference to start validation?
How to set analytical specification for combination products?
how to set sample and standard concentration in RS method?
some product having water content method with pyridine and ethylene glycol mixture instead of methanol? how they are selecting and methanol is not suitable solvent how ?