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in gas chromatography what is the difference between gas flow rate and average linear velocity ?
Ratio of Water and Acetonitrile(diluent) is not recommended to use in cleaning method validation,why?
could negative ions be produced by bombardment process in mass spectrometry?
on the basis of bcs class how to proceed the solubility?
what is procedure of actual procedure for registration of drug?
what you do when compound having dwel wavelength?
mode of absorption in alimentary canal?
How can I develope method of dissolution by HPLC OR UV
My question about gas chromatography sulfur chemiluminsecence detector. I test unknown sample gas by GC-SCD (calibrated ) and the result of *H2S is 279 PPM , *but when I test the same sample with the GC-TCD (calibrated ) the value of *H2S is 2500 PPM . I'd like to inform you that both GCs are calibrated and have very good operation conditions with stable parameters . the question is if the sample gas with higher H2S over detection limits of SCD detector (1000 ppm). why the result it 279 ppm Best regards
We use hicrome 10 cxs column in hplc analysis....pls tell me.. what is the meaning of 10 cxs?
how to get accurate result for Residue on evaporation in purified water
what are the standard methods for HPLC?
Why sodium hydroxide used for maintain pH of phosphate buffer
what is classification of elemental impurities? what is risk assement in elemental impurities?
if you have given one product then how you determine the impurity in that?
