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Questions related from Mel Gibson
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21 September 2017 5,130 4 View
I am trying to understand validation better. Are real patient samples required to test % recovery and specificity?. I was told that you would need this for electrochemistry because of oxidation/...
18 September 2017 602 3 View
Just wondering about their expense to make. Does liquid propulsion cause excess interference in IR?. A multifunctional HPLC that checks for impurities would be more valuable. Does the liquid...
08 September 2017 3,655 4 View
I know benzene rings in tryptophan at 280nm give the absorption so is this the only criterion for a molecule to possess a chromophore?. Or do the functional groups play a pivotal role along with...
30 August 2017 3,188 5 View
"A properly designed guard column does not deteriorate the separation. As a matter of fact, a well designed and well packed guard column using the same material as in the analytical column is a...
27 August 2017 7,003 12 View
The Boron doped diamond electrode is very sensitive. I need to know how hplc uv DAD compares so that I can perform easy Limit of detection testing without making up too many samples, and even...
27 August 2017 277 4 View
My peaks have a slight peak tailing so half height or half width is appropriate but do I use R = (RT1 - RT2) / [0.5 * (W1 + W2)],...
26 August 2017 1,720 4 View
I do not understand if pyocyanin is a betaine compound (alkaloid group family being zwitterionic at neutral state) then how is it also a phenazine compound?. Is pyocyanin secreted by plants that...
13 August 2017 1,232 2 View
I want to try basic conditions for LCMS in negative mode to try to satisfy the different pKa values of my 5 analytes which gear towards acidic and basic. pH5 is fine but the basic analytes can...
05 August 2017 693 2 View
How are they related to anthraquinone, anthracine.
05 August 2017 6,356 1 View
Along with which virulence factors produced during that biofilm transition stage from the planktonic cells. Its good that it was found that cells experience shear stress and flow for formation of...
05 August 2017 9,348 4 View