which solvent is highest poler
acetonitrile
dimethyl formamide
methanole
tetrahydrofurane
buffer solution
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identification is for unknown? qualification for known? reporting for LOQ?
What is the formula for relative diffrence for standard solution in solution stability in validation?
is it necessary to do HPLC calibration at wavelength 315nm if we are doing analysis at this wavelangth
why does used dry caffien in HPLC calibration?
what is the acceptance criteria for enteric coated tablets in 0.1n hcl validation in each parameter?
inhouse product is in capsule form in combination and RLD is in tablet form then can we proceed for multimedia CDP? in inhouse capsule product disso is paddle with sinker in release media is there then RLD product in tablet form then with same as paddle with sinker we can proceed n.a.?
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?
Many times I don't got a caffeine peak in calibration of hplc using guard column ❓
In Dissolution Test why limit is define Q+5% what is the role of +5%.
in stress study if your api not soluble in hcl naoh h2o2 then what require to do?
How we choose the mobile phase for method development.?
can we use the same detector in HPLC as well GC and what could be the differences we can find in the final chromato graph in any aspects?
what is biorelivent dissolution media?
Why do we use KMnO4 in the test of control of obsorbance ? and why do we take specific quantity i.e 57-63mg?
why digestion require in icpms?
