Hello Mireille,
Probably, you need something called top bench chamber, attachable to 
freeze dryer instead of manifold (usually it is plexiglas cylinder with 
cover and rubber gaskets). I can recommend you Labconco Freeze Dryer 
2.5l, which I was using in previous lab: 2 yrs operation almost 
everyday, no problems, quick and very efficient, easy to clean. It is 
good idea to purchase shelves, so you can easily  accommodate up to 15 
x100mL typical urine containers, or one 2L beaker.

See:
http://www.labconco.com <http://www.labconco.com/>
http://www.labconco.com/_scripts/editc20.asp?CatID=1


best regards

Greg

-------------------------------------------------------------
Dr Grzegorz Skrzypek, Research Fellow

West Australian Biogeochemistry Centre
John de Laeter Centre of Mass Spectrometry
School of Plant Biology, The University of Western Australia
35 Stirling Highway (MO90), Crawley WA 6009, Australia

Phone +61 8 6488 4584, Fax +61 8 64887925
email: [log in to unmask]
http://www.bukibuki.eu



Anne McGeachy wrote:
> Hello All,
>
> We want to purchase a durable freeze dryer to process biological samples for 
> stable isotope analysis.  The samples that will be freeze dried range in size 
> and composition (e.g., blood, whole prey items, etc).  Does anyone have 
> advice on a reliable model that is built to last and that can accomodate a 
> range of samples?
>
> Mireille
>
>