please explian me about area normalisation method,diluted standard method,impurity vs impurity and which one has to be selected in method development
1098How they found 1mL of K.F reagent is equivalent to 5mg of water and if we change the composition of K.F reagent, is it can neutralize more amount of water?
1302Why acetonitrile and water are used as extraction solvent when analysis melamine? I thought they are miscible and won't be able to separate...
1216In HPLC calibration, caffeine is used as primary standard for wave length calibration due to caffeine is having dual maxima at 273 & 205 nm and one minima at 245 nm. Any body can give reference of these details from any pharmacopeia (with chapter no.) or any other authentic guideline?
1451Post New Analytical Chemistry Questions
if your product is soluble in 0.1n hcl and water then which you choose as media from these 2 media?
What is the calibration of uv process and preparation
what is the extinction coefficient for Indomethacin or at 319nm wave length.
how you confirm the assay method?
What if impurity area in control sample coming more as compared to LOQ level of impurity ?
Why only Copper standard is used to calibrate Atomic Absorption spectrophotometer?
Qc interview questions
Why use only methanol,used determinationof moisture content not use other solvents
UV and PDA detector, which have less signal to noise ratio?
cefoperozone and sulbactam inj. hplc test method
could negative ions be produced by bombardment process in mass spectrometry?
for which product require to do content uniformity? what is limit of cu?
what is the purge flow & how to calculate
What is the Formula for coreletion coefficient in plhplc calibration
Why potassium dichromate is used in calibration of uv?
