What kind of thermometer are you all using and where can they be purchased? How often do you monitor the temperature?
Thank you Kate Wellspring _____________________________________ Kate Wellspring Collections Manager Amherst College Museum of Natural History Amherst, MA 01002 (413) 542-2165 www.amherst.edu/museumofnaturalhistory On 10/15/08 11:40 AM, "Kaplan, Emily" <[EMAIL PROTECTED]> wrote: > Hi Molly, > You might also check resources on museumpests.net > > fact sheet on webbing clothes moth > http://museumpests.net/whitesheets/default.php > > Fact sheet on low temperature treatment > http://museumpests.net/tools/treatments/FINAL-Low_Temp_fact_sheet.pdf > > This fact sheet also includes references (Tom Strang's article in Collection > Forum "A Review of Published Temperatures for the Control of Pest Insects in > Museums." Collection Forum 8, no. 2 (1992): 41-67 > gives lethal low temperatures for various pests and his CCI note is very > helpful as well > http://www.cci-icc.gc.ca/publications/ccinotes/pdf-documents/n3-3_e.pdf > > > What kind of a freezer are you using? > > You might look at this document about modifying chest freezers to get lower > temperatures > http://museumpests.net/resources/modifying_a_chest_freezer_for_pest_control.pd> f > > Best, > Emily > > From: [EMAIL PROTECTED] [mailto:[EMAIL PROTECTED] > On Behalf Of Margaret Geiss-Mooney > Sent: Tuesday, October 14, 2008 7:46 PM > To: pestlist@museumpests.net > Cc: 'Molly Gleeson' > Subject: RE: [pestlist] question about freezing > > Good afternoon, PestListers My understanding of the freezing process is that > freezing if done correctly also kills the eggs, very important when you are > dealing with infested textiles. > > Check out the following NPS ConserveOGram on freezing: > http://www.nps.gov/history/museum/publications/conserveogram/03-06.pdf > > It appears that you do need to get that freezer temperature done to -20C for > 48 hours. Rapid cooling to -20C is also necessary to assure a complete kill. > The ConserveOGram covers the whole procedure very well. > > Depending on your budget and your staffing, perhaps anoxic treatment should be > considered? > Regards, > Meg > > ._ _ _ _ _ _ _ _ _ _ _ _ ______ > > Margaret (Meg) Geiss-Mooney > > Textile/Costume Conservator in Private Practice > > in beautiful Northern California > > Professional Associate, AIC > > [EMAIL PROTECTED] > > > are in a freezer that is set at 0 F (-17 C). We are in the process of > packing the other half in preparation to move them into the freezer as well. > I would like them to be frozen in a freezer set to at least -20 C, however, > the freezer company quoted exhorbitant fees for lowering the temperature of > the freezer, even for only a few days. I'm concerned that -17 C isn't cold > enough to ensure that the moths are killed, even if we keep them in the > freezer for several weeks. Is this true? > > > > I'm also thinking that we should do a second freeze, to ensure that all life > stages are killed, but if the temperature is not low enough, then maybe this > is pointless. I plan to do a test by putting a bag of live moths/larvae into > the freezer along with the objects, to monitor what's happening, but does > anyone have any experience with this, or have any suggestions about adjusting > the temperature and also about the recommended length of time to freeze at > -17C to ensure mortality of the moths? > No virus found in this incoming message. > Checked by AVG - http://www.avg.com > Version: 8.0.173 / Virus Database: 270.8.0/1724 - Release Date: 10/14/2008 > 2:02 AM >
