Why caffeine as a reference standard used for calibration
of HPLC?
Answer Posted / irfan shaikh
Caffeine is secondary standard.
It is anhydrous and remain stable long time
| Is This Answer Correct ? | 1 Yes | 2 No |
Post New Answer View All Answers
In which situation we require to analytical method validation of excipient?
what is %labelled amount in content uniformity of dosage unit and its calculation?
Colorimtry
please explain about aluminium hydroxide assay
What is the accrptance criteria in RSD for RS method precision on basis of impurity percentages?
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?
Why only Copper standard is used to calibrate Atomic Absorption spectrophotometer?
How to calculate coreletion coefficient
in gas chromatography what is the difference between gas flow rate and average linear velocity ?
What is the requirement for brazil in the analytical method vslidation comparr to ich?
effect of pore size, pore volume, partical size, column length, carbon load on retention time? what is carbon load? what is the use?
in sampling of raw material which side is pasted sampled labels
what is procedure of actual procedure for registration of drug?
What is control room temperature and which guide line says?
if identification threshold crosses the limits then what next step?