[Nhcoll-l] Freezer recommendation

[Gali Beiner]

Dear all, and notably Chris, John, Beth, Dirk, George (and others who
answered personally) -

Thank you all for your helpful responses! I do agree that minus 80C is
overkill for pest control purposes, so our main aim will be to find the
best solution for our curators in terms of preserving tissue/DNA samples
without being interfered, or at least not often interfered, by pest control
requirements.

One of the great functions of this List is to help the conservator to
inform other staff of the best current practices in the field. Thank you
all for helping me create good recommendations for our curators and
collection managers!

Gali

On Sun, Aug 11, 2024 at 2:58 PM Gali Beiner <gali.beiner at mail.huji.ac.il>
wrote:

>
> Dear All,
>
> I'd like to ask for opinions regarding the choice of a freezer for our
> herbarium. The herbarium already has a -40C freezer for pest
> control purposes, but the combination of large quantities of incoming
> material for freezing with questions regarding additional possible uses for
> the freezer raised the question whether a new, additional freezer should be
> a -40C freezer or a -80C freezer.
>
> Generally speaking, pest control does not usually require temperatures as
> low as -80C, but DNA preservation (samples, tissues from non-herbal
> collections) does. Would you consider keeping a -80C freezer to serve both
> purposes as need arises? I'm curious to hear whether other herbaria use
> -80C freezers or choose higher temperatures. There is of course the
> question of cost vs actual requirements, and the main requirement right now
> is for pest control prior to entry into the herbarium.
>
> A penny for your thoughts,
>
> Gali
> --
> Gali Beiner (ACR)
> Conservator, Palaeontology Lab
> National Natural History Collections
> The Hebrew University of Jerusalem
> Berman Building, Edmond J. Safra campus, Givat Ram
> Jerusalem 91904, Israel
> Fax. 972-2-6585785
> *gali.beiner at mail.huji.ac.il <gali.beiner at mail.huji.ac.il>*
>
> *https://nnhc.huji.ac.il/?lang=en <https://nnhc.huji.ac.il/?lang=en>*
>


-- 
Gali Beiner (ACR)
Conservator, Palaeontology Lab
National Natural History Collections
The Hebrew University of Jerusalem
Berman Building, Edmond J. Safra campus, Givat Ram
Jerusalem 91904, Israel
Fax. 972-2-6585785
*gali.beiner at mail.huji.ac.il <gali.beiner at mail.huji.ac.il>*

*https://nnhc.huji.ac.il/?lang=en <https://nnhc.huji.ac.il/?lang=en>*
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