Google Sign in options
Remember me
This is not recommended for shared computers

Sign in anonymously
Don't add me to the active users list

Privacy Policy
Sign In
Create Account

Javascript Disabled Detected

You currently have javascript disabled. Several functions may not work. Please re-enable javascript to access full functionality.

0

ORAC assay - Hydrophobic Powder Dissolving Problems

Started by mdarley, Jul 12 2012 11:41 AM

Please log in to reply

3 replies to this topic

#1 mdarley

member

Members
4 posts

0
Neutral

Posted 12 July 2012 - 11:41 AM

Hey All,

I am running an ORAC (oxygen radical absorbance capacity) assay and I'm having some problems.

I have a hydrophobic powder that I want to test but it has to be in solution to do so... and it will not go into solution. I have tried Acetone, Methanol, and Chloroform with no luck. It falls out of solution almost immediately after mixing. I have attempted some heating and on a rocker plate for 1 hour. When the movement stops, it falls out and the heating didn't seem to change much.

Can anyone give me some tips on a better solvent to use or ORAC advice in general?

Thank you,

Meghan

Back to top

#2 hobglobin

Growing old is mandatory, growing up is optional...

Active Members
5,249 posts

60
Excellent

Posted 12 July 2012 - 11:56 AM

Perhaps an oil and/or a surfactant then?

One must presume that long and short arguments contribute to the same end. - Epicurus
...except casandra's that belong to the funniest, most interesting and imaginative (or over-imaginative?) ones, I suppose.

Back to top

#3 mdarley

member

Members
4 posts

0
Neutral

Posted 12 July 2012 - 12:31 PM

I could try that but I think don't think the reader would pick anything. The whole system is aquesous. Thank you though. I'm going to give it a try...