[Taxacom] Water soluble mounting media

[JF Mate]

At one point DMHF became almost impossible to find but now you can get
it from a couple of entomological equipment dealers in Europe (in
small amounts). As for collapsing it depends on the solvent. Isopropyl
alcohol is probably a better choice then water or ethanol. Glycerin
also works nicely and results in a set but gummy, crystal clear
medium. A lot of experimenting on useless material is required i'm
afraid but it does appear to be a stable long term medium.

Best

Jason

On 19 March 2014 17:13, Richard Zander <Richard.Zander at mobot.org> wrote:
> I managed to get a small bottle of the dimethyl hydantoin formaldehyde (75%) from a chemical company a while back, and found it collapsed sensitive tissues in mosses. An agent later called me and asked how many drums of the stuff I wanted to order ....
>
>
> ____________________________
> Richard H. Zander
> Missouri Botanical Garden, PO Box 299, St. Louis, MO 63166-0299 USA
> Web sites: http://www.mobot.org/plantscience/resbot/ and http://www.mobot.org/plantscience/bfna/bfnamenu.htm
> Evol. Syst.: http://www.mobot.org/plantscience/resbot/EvSy/Intro.htm
> UPS and FedExpr -  Missouri Botanical Garden, 4344 Shaw Blvd, St. Louis MO 63110 USA
>
> -----Original Message-----
> From: taxacom-bounces at mailman.nhm.ku.edu [mailto:taxacom-bounces at mailman.nhm.ku.edu] On Behalf Of JF Mate
> Sent: Wednesday, March 19, 2014 11:05 AM
> To: Taxacom
> Subject: [Taxacom] Water soluble mounting media
>
> DMHF (dimethyl hydantoin formaldehyde resin) has been used for small
> insects. A home made variation could be lomper
> (http://markgtelfer.co.uk/water-soluble-mounting-medium-for-genitalia/).
> I have used the latter for genitalia but not for small insects. A key
> point is matching the osmotic pressure so you would need to experiment
> a bit.
>
> Best
>
> Jason
>
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