Louri,

My suggestion is to slice the organs, fix in buffered
formalin or Wentworth's fixative (see most
histotechnology textbooks for the formula) for 4 weeks
or more. Mount specimen in a perspex museum box. Rinse
specimen in 95% ethanol and leave in ethanol untill
colour comes back (brown bloody areas appear red),
replace ethanol with light paraffin oil, seal the box,
label and all done.

Tony

 --- Louri Caldwell <louri_c@hotmail.com> wrote: > Hi
everyone,
>
> We have a researcher interested in retaining whole
> organs for teaching
> purposes, but would like the original color of the
> organ to remain intact. 
> I know a similar topic was addressed not too long
> ago, and I have read the
> archives, but wanted to see if anyone had
> suggestions other than
> plastination.   Ideally, he would like a fixative -
> and the only one I've
> found a reference for contains chloral hydrate -
> which he can't purchase as
> a DEA number is required to do so.
>
> Any suggestions you may have would be greatly
> appreciated.
>
> Thank you,
> Louri