Hi Todd,
because eggs sticks usually just on protein textiles, I would clean (only for
safety) the non-moth-materials just mechanical with wiping or maybe vacuum
cleaning and visual inspection on larvae or pupal.
Eggs couldn´t survive longer times without food source, so you have to look on
the
Hi Isabel,
We don't have a big problem with clothes moths in our collection, though there
are around, and they are abundant in Canberra. If you would like me to collect
some Australian samples for your molecular work, let me know.
Cheers,
Tonya
Collection Manager
Australian National Wildlife
Hello Group-
A storage room is being cleared out that shows signs of webbing clothes
moths. All fabrics/protein in the room are going to be frozen, but there
are also other "non-moth friendly materials". We want to be cautious and
"treat" every object that is taken out of the room to not create
Thanks
adie
From: pestlist@googlegroups.com On Behalf Of Voron,
Joel
Sent: 19 January 2021 16:10
To: pestlist@googlegroups.com
Subject: Re: [PestList] Thawing times after freezing
I would check out some of the abstracts and resources from Tom Strange and
David Pinnegar on cold treatment for e
Interesting (encouraging!) that we seem to agree on kill times and temperatures
and we have remote probes in a crate or a block of wood to additionally confirm
(as best we can) the core temperature of an object.
From: pestlist@googlegroups.com On Behalf Of Helen
Coxon
Sent: 19 January 2021 15
I am aware of that, but unless it’s a really small mass load, our freezer
operating at full blast almost always takes longer than four hours to drop the
temperature below -20C, which is the “kill point”. We do the best we can!
Helen
From: 'Adrian Doyle' via MuseumPests
Sent: Tuesday, January
Hi Joel and Helen
I seem to remember the four hours kill time but don’t have anything published
to refer to?
Any ideas where this may be published
We have not had reemergence
Adie
From: pestlist@googlegroups.com On Behalf Of Voron,
Joel
Sent: 19 January 2021 15:53
To: pestlist@googlegroups.com
The Temp dropping quickly within four hours is important to kill all life
stages before pest can develop "antifreeze like properties". Have you had any
issues with reemergence of pests in treated objects?
Joel Voron Colonial Williamsburg Foundation
Conservation Dept.
Integrated Pest
We try to have a shorter freeze-down time – within 24 hours if possible, though
it depends greatly on the mass of the freezer load.
We run at -33C for a minimum of 72 hours, but usually for closer to 100 hours.
We allow natural warm-up to ambient temperatures, which tends to take a minimum
of 48
Hello folks
mostly mixed organic materials and some composite ones
Ethnographic - wood, feathers, fur, cane etc
All are double wrapped and buffered where necessary with acid free tissue
balls/pads
bags are sealed with heat sealers and heavy-duty tape
Adie
From: pe
Wondering what types of objects are you freezing? We use -32 at 72 hrs. cold
then carefully remove and shelve nearby the freezer with a 24 Hr.
re-acclimation period. We have never seen any thermal shock issues. I would
think that the bags help with objects thawing a bit slow and even? Thoughts
We usually just turn off the freezer and wait until it comes up to ambient
temperature with the freezer door closed. This takes about 24 hours,
though we don't go as cold as you. If, for some odd reason, the temp comes
up too quickly we'll bring up the temp in stages. So far no problems.
Alan
Morning folks,
we are trying to get some extra freezing done as we have lost time due to the
Covid epedemic.
Has anyone got any research on thaw times for freezing they are prepared to
share?
At the moment we have a rather long return to ambient from -35c / -30c
primarily to allow the objects
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