Re: [pestlist] anoxic treatment update and more questions

[Alex Roach]

This is a message from the Museumpests.net  List.
To post to this list send it as an email to pestlist@museumpests.net
To unsubscribe look at the footer of this email.
---



Hi Nicole
As Pascal mentioned, the temperature is going to be critical in ensuring
that you achieve 100% mortality. When testing powderpost beetles Dr Mark
Gilberg found that it took up to 12 days to kill all stages at 30C and
70RH. You’re using a lower RH than in that test which should reduce the
time, but it takes longer to kill insects at lower temperatures (i.e. up to
6 weeks at 20C). If the temperature where you are treating the objects is
low you will need to increase the temp.
Oxygen scavengers take a number of days to reduce the oxygen level so you
need to allow for this when thinking about treatment time as well.
Regarding the Anobium life cycle, the adults emerge in late spring/ early
summer. This means that there would be minimal risk of cross-infestation as
the borers will be in the larval stage at this time (unless they are from
the southern hemisphere, e.g. Australia, where the beetles are emerging
now).
Best wishes
Alex


On Wed, 3 Jan 2018 at 5:44 am, Pascal Querner  wrote:

> This is a message from the Museumpests.net  List.
> To post to this list send it as an email to pestlist@museumpests.net
> To unsubscribe look at the footer of this email.
> ---
> Hi Nicole,
>
> what temperature do you have for your treatment and what pest (in wood or
> others?). if you have about 25 C and the anoxia systhem is working, you
> should have 0,0 % Oxygen and 3 weeks should be enough. For wood boring
> pests it should be fine also, but they one of are the hardest to kill with
> anoxia.
>
> All the best from Europe,
>
> Pascal
>
> *Gesendet:* Dienstag, 02. Januar 2018 um 18:10 Uhr
> *Von:* "Nicole Grabow" 
> *An:* pestlist@museumpests.net, "AIC Objects Specialty Group Discussion" <
> os...@cool.conservation-us.org>
> *Betreff:* [pestlist] anoxic treatment update and more questions
> This is a message from the Museumpests.net  List.
> To post to this list send it as an email to pestlist@museumpests.net
> To unsubscribe look at the footer of this email.
> ---
> Hello lists (crossposting with OSG and Pests),
> Thank you all for your help and advice in designing an anoxic system. I
> was able to order the RP-K oxygen scavengers direct from Mitsubishi and
> since there were none in stock in all of North America they shipped them
> all the way from Tokyo. My RH is holding at 45%, which is good. Also, a
> very generous colleague has lent us an oxygen detecting system.
>
> I am writing now to ask if anyone - particularly perhaps the bug experts
> on the Pest list - can tell me about the life cycle of the Anobiidae
> family, and if there is any wiggle room on the 21-day recommendation for
> anoxic treatment. The shipment from Japan set us back a few days and we
> will hit the 21-day mark exactly one day after the show opens. What kind of
> risk are we looking at if we choose to take them out after 20 days?
>
> Thanks,
> Nicole
>
>
> Nicole Grabow
>
> Senior Objects Conservator and Preservation Conservator
>
> Midwest Art Conservation Center
>
> 2400 Third Avenue South
> 
>
> 
>
> Minneapolis, MN 55404
> 
>
> (612)870-3129
>
> ngra...@preserveart.org
>
>
>
> *The Midwest Art Conservation Center is a non-profit regional center for
> the preservation and conservation of art and artifacts providing treatment,
> education, and training for museums, historical societies, libraries, other
> cultural institutions as well as public and private clients.*
>
>
>
> -
> To unsubscribe from this list send an email to
> imail...@museumpests.net and in the body put:
> "unsubscribe pestlist"
> Any problems email l...@zaks.com
>
>
>
>
> -
> To unsubscribe from this list send an email to
> imail...@museumpests.net and in the body put:
> "unsubscribe pestlist"
> Any problems email l...@zaks.com
>
>
>
>
-- 
*Alex Roach*
*Director*
Modified Atmospheres
*M:* 0414 663 472
ABN: 66 164 577 557


-
To unsubscribe from this list send an email to
imail...@museumpests.net and in the body put:
"unsubscribe pestlist"  OR just send an
email to l...@zaks.com and ask to be
removed.
Any problems email l...@zaks.com

RE: [pestlist] Anoxic treatment

[Mallinckrodt, Casey (VMFA)]

This is a message from the Museumpests.net  List.
To post to this list send it as an email to pestlist@museumpests.net
To unsubscribe look at the footer of this email.
---





We currently use anoxia treatments on an as-needed basis using Mavelseal bags 
we make to the size needed, and Ageless ZPT-2000. We have needed to treat less 
than 10 objects in the last year, most with multiple materials, including 
feathers, and some archaeological wood.

We no longer include indicators- they are unreliable- but with the  small size 
of most of our bags/anoxia chambers it’s possible to observe the 20% reduction 
in volume within the first 24 hours.  I have used a Hobo inside the bag to 
record changes in RH as well.

The RH will drop by a small percentage but NOT  to zero! I have used acid free 
tissue paper as an RH buffer as well as for surface protection, and have used 
silica gel for larger volume or more vulnerable objects.

This is a  reliable if limited solution- it is slow and it cannot be monitored 
exactly,  but is effective and cost effective  for our needs.. We are 
considering a freezer and have access to a tent-system if a larger scale 
treatment is ever needed.

Casey



From: pestlist-ow...@museumpests.net [mailto:pestlist-ow...@museumpests.net] On 
Behalf Of Nicole Grabow
Sent: Tuesday, November 28, 2017 2:04 PM
To: pestlist@museumpests.net
Subject: [pestlist] Anoxic treatment

This is a message from the Museumpests.net  List.
To post to this list send it as an email to 
pestlist@museumpests.net
To unsubscribe look at the footer of this email.
---
I have a couple of questions about anoxic pest treatments using oxygen 
scavengers. I more commonly use low-temperature treatment and I'm more familiar 
with that technique, but I understand the anoxia is recommended for laminate 
structures and painted wood.

My first question is about oxygen indicators. I know that the Ageless 
indicators are prone to failure, but more sophisticated instrumentation is 
expensive. I have received quotes for both the MOCON OpTech Model P and the 
PreSens Fibox 4, but at over $5K they are out of our budget for this fiscal 
year. Does anyone have a less expensive solution, or, alternately, equipment 
that we could rent for a singe project?

My second question has do to with the basic premise that anoxia is safer than 
freezing, and the basis of my concern is relative humidity. With anoxia induced 
by oxygen scavengers (which is the system I have available to me) the RH 
ultimately goes to 0% - or else the scavengers aren’t working. 21 days of this 
does not seem safer than 72 hours of freezing - what am I missing?

Nicole Grabow

-
To unsubscribe from this list send an email to
imail...@museumpests.net and in the body put:
"unsubscribe pestlist"
Any problems email l...@zaks.com





-
To unsubscribe from this list send an email to
imail...@museumpests.net and in the body put:
"unsubscribe pestlist"  OR just send an 
email to l...@zaks.com and ask to be 
removed.
Any problems email l...@zaks.com

Re: [pestlist] anoxic treatment of wooden boxes

[Appelbaum & Himmelstein]

This is a message from the Museumpests List.
To post to this list send it as an email to pestlist@museumpests.net
To unsubscribe please look at the footer of this email.
---
The only alternative I can think of is heat - about 130 deg F for a few hours 
should do it.  Exterminators have the equipment to make this happen in your 
space because they now use heat to kill bed bugs.  Someone else on the list can 
tell you the specifics and affirm that this works for silverfish.  Of course, 
no treatment will keep insects from coming back if the material is damp, and 
making sure all the mold is dead is also necessary.  

Barbara Appelbaum


On Apr 18, 2013, at 6:20 PM, Mary Baughman wrote:

> This is a message from the Museumpests List.
> To post to this list send it as an email to pestlist@museumpests.net
> To unsubscribe please look at the footer of this email.
> ---
> Greetings Pest Listers –
> 
> I think I know what to do, but if anyone has similar experience and cautions 
> or tips, please share them.
> 
> 
> Here’s the situation:  silverfish are eating the paper labels on the outside 
> of 13 wooden boxes holding approximately 1000 pounds of 1947 era printing 
> plates made of copper and lead alloy. The plates were used; there is ink 
> residue. The 13 original wooden boxes, holding possibly 500 plates, are on a 
> wooden pallet. The boxes at some point got wet, and look a bit moldy, but are 
> now dry. The boxes are not well sealed. A thick soft blotting paper or wool 
> felt (?) separates the plates from each other. The silverfish may be eating 
> this, and maybe the boxes too.
> 
> 
> I think I should use barrier film and oxygen absorbers to kill the silverfish.
> 
> 
> Possibly I will just leave the boxes on the pallet and seal against the tile 
> floor. Am I correct that the oxygen absorbers likely will not adversely 
> affect the boxes, the plates, and the ink?
> 
> I could also freeze this material, but I think the logistics would be more 
> difficult. I am not sure the floor of the on-site freezer could support this 
> weight. I’m also not sure what effect freezing would have on these materials.
> 
> 
> After the treatment, the boxes of printing plates will be moved to a location 
> that has better humidity control. 
> 
> 
>  I am glad that this forum exists!
> 
> Thankfully, 
> Mary Baughman
> 
> printing plate, silverfish damaged materials, 12 inch ruler next to 13 boxes 
> of plates
> 
> 
> 
> 
> 
> --
> To send an email to the list, send your msg to pestlist@museumpests.Net
> 
> To unsubscribe from this list send an email to pestlist@museumpests.net and 
> in the subject put:
> "unsubscribe" - no quotes please.
> 
> You are receiving the Pestlist emails in standard mode.
> To change to the DIGEST mode send an 
> email to imail...@museumpests.net with this command in the body:
> 
> set mode digest pestlist
> 
> Any problems email l...@collectionpests.com or l...@zaks.com

Appelbaum & Himmelstein LLC
444 Central Park West
New York, NY  10025
212-666-4630 (voice)
212-316-1039 (fax)
aa...@mindspring.com
website: aandhconservation.org








--
To send an email to the list, send your msg to pestlist@museumpests.Net

To unsubscribe from this list send an email to pestlist@museumpests.net and in 
the subject put:
"unsubscribe" - no quotes please.

You are receiving the Pestlist emails in standard mode.
To change to the DIGEST mode send an 
email to imail...@museumpests.net with this command in the body:

set mode digest pestlist

Any problems email l...@collectionpests.com or l...@zaks.com

Re: [pestlist] Anoxic treatment (on behalf of Stephan Schafer)

[Cindy_Norum]

This is a message from the Museumpests List.
To post to this list send it as an email to pestlist@museumpests.net
To unsubscribe please look at the footer of this email.
---
Return Receipt
   
   Your   Re: [pestlist] Anoxic treatment (on behalf of Stephan
   document:  Schafer) 
   
   wascindy_no...@nps.gov  
   received
   by: 
   
   at:03/29/2012 08:44:32 AM MDT   
   






--
To send an email to the list, send your msg to pestlist@museumpests.Net

To unsubscribe from this list send an email to pestlist@museumpests.net and in 
the subject put:
"unsubscribe" - no quotes please.

You are receiving the Pestlist emails in standard mode.
To change to the DIGEST mode send an 
email to imail...@museumpests.net with this command in the body:

set mode digest pestlist

Any problems email l...@collectionpests.com or l...@zaks.com

Re: [pestlist] Anoxic treatment (on behalf of Stephan Schafer)

[colin smith]

This is a message from the Museumpests List.
To post to this list send it as an email to pestlist@museumpests.net
To unsubscribe please look at the footer of this email.
---
Dear J.S OH,

I agree with most of what Stephan says, however there are a few points which 
I should like to comment on;

  1.. There is a limited choice of inert gases, I also never saw the point 
in using Argon. In some parts of the world you may still use nitrogen from 
cylinders or generate it. Sadly this is no longer the case in the EU as 
nitrogen and carbon dioxide are now a registered pesticides and you have to 
have a special licence to use them. Scavengers are currently exempt.
  2.. Flexible bubbles always work at ambient pressure, ridged chambers do 
not. This can cause problems.
  3.. There are some complex and expensive systems for control, most are not 
required.
  4.. You will have to humidify a dry gas. Anoxia using scavengers avoids 
this.

Please visit our website for more detailed information.

Best wishes

Colin Smith

  http://www.csconserv.co.uk/  &  http://conserv.biz/


ZerO2 systems

From: l...@zaks.com
Sent: Thursday, March 29, 2012 1:55 PM
To: pestlist@museumpests.net
Subject: FW: [pestlist] Anoxic treatment (on behalf of Stephan Schafer)
This is a message from the Museumpests List.
To post to this list send it as an email to pestlist@museumpests.net
To unsubscribe please look at the footer of this email.
---

Dear J.S. OH,

There are certainly many with experience in anoxic treatments but there are 
not as many “off the shelve” solutions, especially when it comes to larger 
volumes. Therefore, it would be important to know, what the volume (e.g. in 
m3) of your bubble or chamber should be as this is certainly one of the 
determining factors. However, when considering frequent anoxia treatments 
there are in my opinion three or four main questions:



1.   what source of inert gas to use

2.   what type of chamber or bubble (rigid or bubble)

3.   what equipment to use to control the process

4.   how to humidify or dehumidify



1.   The gas can obviously be acquired in tanks but you certainly may 
want to consider using a nitrogen generator. There are no major advantages 
in using argon when the objective is to kill pests! There are nowadays 
nearly maintenance and oil free PSA (pressure swing adsorption) based N2 
generators that will produce purity levels up to 99,99%

2.   Rigid chambers can be built of sheet metal etc. or you can of 
course produce flexible bubbles with barrier plastic sheets.

3.   There are anoxia control units that will constantly data log and 
control the O2 concentration, humidity and temperature and if you wish even 
pressure. You should look for something that is easy to use. I had a piece 
of equipment custom made, with a cellular modem installed that will send 
protocols of the conditions inside the bubble via SMS to my cell phone. This 
is a very practical feature of you are not constantly near the treatment 
site.

4.   There are several ways to humidify the gas that will always be 
completely dry coming from a tank or generator. So in nearly all cases, you 
will have to humidify the gas according to the needs and prior climatic 
conditions of the objects. This can be done by splitting the main gas stream 
into a dry and wet stream or by actually placing a humidifier system inside 
the bubble that is turned on and off by the control unit. You also may have 
to dehumidify and of course it is possible to do this as well but in many 
cases the “dry” gas stream is sufficient for that purpose.



I hope these comments are of any help and if you need further assistance don’t 
hesitate to contact me off the list.



Dipl. Rest. Stephan Schäfer





--

STEPHAN SCHÄFER CONSERVAÇÃO E RESTAURAÇÃO LTDA.

CONSERVATION AND RESTORATION OF ART AND CULTURAL HERITAGE

PREVENTIVE CONSERVATION AND NON TOXIC PEST CONTROL IN MUSEUMS,

LIBRARIES, ARCHIVES AND COLLECTIONS



Rua Comendador Elias Zarzur, 2330 - Alto da Boa Vista
04736-003 Sao Paulo, SP
Tel./Fax: 00 xx 11 3816-0489
Cel: 00 xx 11 8366-0230
e-mail: step...@stephan-schafer.com

Skype: stephan.schaefer5

www.stephan-schafer.com
www.artprotect.com.br

--- 





This is a message from the Museumpests List.
To post to this list send it as an email to pestlist@museumpests.net
To unsubscribe please look at the footer of this email.
---

Dear all



I am J.S. OH of The National Folk Museu of Korea and reponsible for IPM of 
The National Folk Museum of Korea.

Now I am investigating the anoxic treatment  of museums around the world.

Does anyone have any information of anoxic treatment(nitrogen

RE: [pestlist] Anoxic treatment

[Anderson, Gretchen]

This is a message from the Museumpests List.
To post to this list send it as an email to pestlist@museumpests.net
To unsubscribe please look at the footer of this email.
---
Dear Sir,

To start with you should take a look at the resources page of the Museum Pest 
web site (http://www.museumpests.net/ ).  That will provide you with a great 
deal of information. The second site I recommend you take a look at is the 
Canadian Conservation Institute's Pest article 
http://www.cci-icc.gc.ca/caringfor-prendresoindes/articles/10agents/chap06-eng.aspx.


Good luck
Gretchen Anderson
Conservator
Carnegie Museum of Natural History
4400 Forbes Ave
Pittsburgh PA 15202
anders...@carnegiemnh.org


From: ad...@museumpests.net [mailto:ad...@museumpests.net] On Behalf Of ???
Sent: Tuesday, March 27, 2012 8:50 PM
To: pestlist@museumpests.net
Subject: [pestlist] Anoxic treatment

Dear all

I am J.S. OH of The National Folk Museu of Korea and reponsible for IPM of The 
National Folk Museum of Korea.
Now I am investigating the anoxic treatment  of museums around the world.
Does anyone have any information of anoxic treatment(nitrogen or argon, rigid 
wall chamber, bubble etc) of the museums around the world.

Sincerely yours

J.S. OH

Conservation Laboratory
The National Folk Museum of Korea
110-820
1-1 Seojong-Ro Jongro-Gu Seoul
Republic of Korea
Tel 82 2 3704 3276
Fax 82 2 3704 3273
Mail kcomm...@yahoo.co.kr


--
To send an email to the list, send your msg to pestlist@museumpests.Net

To unsubscribe from this list send an email to pestlist@museumpests.net and in 
the subject put:
"unsubscribe" - no quotes please.

You are receiving the Pestlist emails in standard mode.
To change to the DIGEST mode send an
email to imail...@museumpests.net with this command in the body:

set mode digest pestlist

Any problems email l...@collectionpests.com or l...@zaks.com

The information contained in this message and/or attachments is intended only 
for the person or entity to which it is addressed and may contain confidential 
and/or privileged material.  Any review, retransmission, dissemination or other 
use of, or taking of any action in reliance upon, this information by persons 
or entities other than the intended recipient is prohibited.  If you received 
this in error, please contact the sender and delete the material from any 
system and destroy any copies.  Any views expressed in this message are those 
of the individual sender.


--
To send an email to the list, send your msg to pestlist@museumpests.Net

To unsubscribe from this list send an email to pestlist@museumpests.net and in 
the subject put:
"unsubscribe" - no quotes please.

You are receiving the Pestlist emails in standard mode.
To change to the DIGEST mode send an 
email to imail...@museumpests.net with this command in the body:

set mode digest pestlist

Any problems email l...@collectionpests.com or l...@zaks.com