Re: Help with sampling techiques

"Phil Hobbs" <[EMAIL PROTECTED]> wrote in message
news:[EMAIL PROTECTED]
> Marvin Margoshes wrote:
> >
> > Sunscreens also contain material that won't dissolve in water, even with
a
> > detergent.
> >
> >
> Like what? Zinc oxide?  What will it dissolve in?  And in real life, it
> doesn't matter if it's a colloid or a solution, just as long as it
> doesn't stick to the glassware.
>
> Cheers,
>
> Phil Hobbs
>
The stuff I'm using now includes titanium dioxide among its ingredients.  I
think that is common.