[pestlist] on anoxia systems

[Jerry]

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So many solutions...
Suzanne Hargrove's note moves me to make some comments on anoxia. Her
posting highlights the weak spot of all anoxic treatment method: creating
an effective envelope for the treatment. This is worth expanding on for
those of you who have not already used anoxia for pest control.

The idea behind anoxia is simple: place your infested object(s) in a
sealed enclosure, remove the oxygen, and the insects (all life stages)
will die. However, you must maintain extremely low levels (and moderate to
warm temperatures) for the process to work effectively.

Whether the envelope is made of flexible barrier film (Marvelseal, Escal,
no-name foil film, Aclar, EVOH, etc.), or is a rigid enclosure, the only
important variable is how "leaky" is it?. It's not hard to remove most of
the oxygen, but an interesting problem becomes apparent when you approach
really low levels.

Here's the problem: The pressure of oxygen in the air (~21%) will "drive"
oxygen into an enclosure being kept at less than 0.5% (the commonly
accepted magic number for anoxic treatment). Pressure will force oxygen
through pinholes, permeate plexiglass plates (acrylic), and wiggle through
seams.

If you have a well sealed enclosure, it's relatively easy to remove oxygen
right down to effective levels by displacing with a gas (Nitrogen, Argon),
or using one of many available oxygen absorbers (eg Ageless and other
brands or types). Keeping it at these levels is the trick.

Various methods of achieving and maintaining anoxic conditions have their
champions (and suppliers), and while some methods are slightly superior or
more cost effective for for particular applications, the basic process
(from the insect's point of view) is the same.

As Keepsafe Microclimate Systems, I have supplied oxygen absorbers,
barrier film, made-to-order envelopes, nitrogen generators, humidity
stabilizers and advice for some time now - suggesting different solutions
for different applications. I'm now working with Colin Smith (who is based
in the UK) and will soon be offering his Flexicube ready-made barrier film
bags and other aspects of his ZerO2 system in North America.

As for anoxia vs freezing (or heating)- I'm for whatever works. Finding a
method of killing the insects is relatively easy. Protecting the objects
is usually the greater challenge.

js

Jerry Shiner
Keepsafe Microclimate Systems
www.keepsafe.ca   i...@keepsafe.ca
+1 416 703 4696+1 800 683 4696

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> ---
> Hi Emily:
>
> We recently tried to do an anoxic atmosphere by making our own
> Marvelseal bag for a brush pile an artist was using for an installation.
>
>
> We had trouble keeping the bag from getting holes in it and achieving a
> good seal.  The ZerO2 system looks fairly easy to use.  I'd be curious
> to see who has used it in the us.
>
>  For our project, we wound up purchasing a freezer for about $700.  It
> was much easier in the long run.  We bought a fairly large one ca 7 feet
> across ca. 3 feet deep and 3 feet high.  We got it from a discount
> appliance center in town-they delivered it.  By far this was the easiest
> way we found for treating the art and was relatively cheap compared to
> the purchase of all the materials to do the anoxic atmosphere.  Plus we
> have the freezer for future fumigation, cold storage, or emergency
> freezing should we have a leak/water emergency.  It can always be turned
> off and left hinged open when not needed to save energy.  It may seem
> like overkill, but at the very low temps, we froze some hxtal and it
> lasted for weeks!
>
> Sincerely,
>
> Suzanne
>
> Suzanne Hargrove
> Head of Conservation
> Toledo Museum of Art
> 2445 Monroe St.
> Toledo, OH  43620
> tel. 419-254-5771 X7460
> fax. 419-254-5773
> shargr...@toledomuseum.org
>
 "Kaplan, Emily"  1/26/2012 4:19 PM >>>
>
> Hi all,
> Our registrar (copied here) is looking for a facility * museum or
> commercial - with a freezer we could rent or “borrow” in the Toronto
> area. We have a shipment of incoming material that has been found to be
> infested and we would like to treat it before it  crosses the border to
> the US.
>
> We would be grateful for any suggestions and can provide more details.
>
>
> You can reply to the list, to me  or to
> Rajshree Solanki  NMAI Loan Registrar solan...@si.edu
>
> Than

Re: [pestlist] looking for freezer in Toronto area

[Suzanne Hargrove]

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Hi Emily:
 
We recently tried to do an anoxic atmosphere by making our own Marvelseal bag for a brush pile an artist was using for an installation.  
 
We had trouble keeping the bag from getting holes in it and achieving a good seal.  The ZerO2 system looks fairly easy to use.  I'd be curious to see who has used it in the us. 
 
 For our project, we wound up purchasing a freezer for about $700.  It was much easier in the long run.  We bought a fairly large one ca 7 feet across ca. 3 feet deep and 3 feet high.  We got it from a discount appliance center in town-they delivered it.  By far this was the easiest way we found for treating the art and was relatively cheap compared to the purchase of all the materials to do the anoxic atmosphere.  Plus we have the freezer for future fumigation, cold storage, or emergency freezing should we have a leak/water emergency.  It can always be turned off and left hinged open when not needed to save energy.  It may seem like overkill, but at the very low temps, we froze some hxtal and it lasted for weeks!
 
Sincerely,
 
Suzanne
 
Suzanne HargroveHead of ConservationToledo Museum of Art2445 Monroe St.Toledo, OH  43620tel. 419-254-5771 X7460fax. 419-254-5773shargr...@toledomuseum.org>>> "Kaplan, Emily"  1/26/2012 4:19 PM >>>

Hi all,
Our registrar (copied here) is looking for a facility - museum or commercial - with a freezer we could rent or "borrow" in the Toronto area. We have a shipment of incoming material that has been found to be infested and we would like to treat it before it  crosses the border to the US.
 
We would be grateful for any suggestions and can provide more details. 
 
You can reply to the list, to me  or to 
Rajshree Solanki  NMAI Loan Registrar solan...@si.edu
 
Thanks everyone,
Emily
 
 
Emily Kaplan
Conservator
National Museum of the American Indian
Cultural Resources Center
4220 Silver Hill Rd Suitland MD 20746
301.238.1418 fax 301.238.3201
kapl...@si.edu
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[pestlist] RE: Beehives

[Louis Sorkin]

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Last October, we had this presentation at our monthly meeting of The New York 
Entomological Society and possibly this is being installed?


Speaker:  Jarrett Mellenbruch
http://deepecologyproject.com/
Presentation:

"HAVEN"

Jarrett Mellenbruch studied at the Rhode Island School of Design and has 
exhibited his work in New York City, Kansas City and Tokyo. He is a 
third-generation beekeeper and an adjunct professor at the University of 
Missouri - Kansas City Department of Art and Art History.

HAVEN is a proposed nationwide network of living beehive sculptures for both 
honey bees and native bees. Unlike conventional honey bee hives, which have 
been developed for the easy harvesting of honey and other bee products, and 
need frequent maintenance and "hive management," HAVEN is a self-sustaining 
hive designed solely to promote the well-being of its honey bee inhabitants.

Prototype development for HAVEN was funded by a Rocket Grant from the Andy 
Warhol Foundation and the project launched with an installation this summer in 
a public garden in downtown Kansas City, Missouri. The goal is to place 1,000 
HAVEN sculptures in parks, gardens, museums, universities and private 
properties around the country, thereby creating a coast-to-coast sanctuary for 
honey bees and a educational interface for natives.
HAVEN seeks, through the power of art, to effect real change in the current 
honey bee crisis, as well as to raise public awareness of the importance of 
native pollinators and the interconnectedness of all species.


From: ad...@museumpests.net [mailto:ad...@museumpests.net] On Behalf Of Matthew 
Mickletz
Sent: Tuesday, January 31, 2012 7:20 AM
To: 'pestlist@museumpests.net'
Subject: [pestlist] RE: Beehives

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Hi Abby,

Just to clarify:  do you mean a beehive as in the wooden, box-type with 
multiple honey comb frames in?  Will it be active or an empty one on display?  
Or is it the kind found in nature?  Just some passing thoughts

My two cent - Active or inactive, I can't imagine it not having some impact on 
the IPM.  If it is a newly made box-type hive, I suppose you could have that 
chance of wood boring insects.  I have also read about other insects taking up 
residence in active hives, mites, wax moths (don't know anything about these 
guys as a threat to anything, just that they get ignored by the bees), even 
mice!  Then, yes, as you mentioned, this potential for dead insects in the hive 
= food for baddies.

OK, anyway, this is assuming an active hive, I'll stop now. :)

Best,

Matt Mickletz

From: ad...@museumpests.net [mailto:ad...@museumpests.net] On Behalf Of Abigail 
K Stevens
Sent: Tuesday, January 31, 2012 4:47 AM
To: pestlist@museumpests.net
Subject: [pestlist] Beehives

Dear all,

Our Museum is keen to install a beehive somewhere around our building. 
Obviously this is of concern to me, as I don't want to be introducing lots of 
insects that can find their way into the building and die, thus becoming a food 
source for more threatening pests. I was just wondering if anyone has had any 
experience of the kind of impact a beehive can have on IPM, and can highlight 
any potential problems or ways of reducing the risk that a hive might cause?

Many thanks in advance,
Abby

Abby Stevens
Preventive Conservator
Manchester Museum & Whitworth Art Gallery

0161 3061590 or 07825011011
abigail.k.stev...@manchester.ac.uk

Monday, Tuesday & Friday - Museum
Wednesday & Thursday - Gallery


[http://www.winterthur.org/email/emp_signature/banner.jpg]


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[pestlist] RE: Beehives

[Jones, Robert (Ryan)]

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I am not a beekeeper, so I don't know what the possibilities are of the colony 
splitting off from the wooden-box type hive you have described. If bees from 
the box-colony scout out a different location and try establish a new colony, 
you could end up with some pretty extensive problems. I have helped coordinate 
the removal of honey bee nests in wall voids on property here in Williamsburg, 
and it is not a pretty sight. Often, the process involves cutting large holes 
in walls to remove the nests and honey. If not, you can imagine the mess that 
would occur with insects and rodents (and secondary scavengers like Dermestids) 
being drawn to the honey as a food source.

From: ad...@museumpests.net [mailto:ad...@museumpests.net] On Behalf Of Abigail 
K Stevens
Sent: Tuesday, January 31, 2012 8:09 AM
To: pestlist@museumpests.net
Subject: [pestlist] RE: Beehives

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Thanks Matt,

Yes it would be an active hive, the wooden box type, with honey bees I think. 
Like you said, I had heard of other pests taking up residence in hives, but 
wasn't sure which pests. We have had problems in the past with Reesa vespulae 
beetles, which like eating dead insects, and so I'm particularly worried about 
the bees encouraging them!

Thanks for your comments,
Abby

From: ad...@museumpests.net [mailto:ad...@museumpests.net] On Behalf Of Matthew 
Mickletz
Sent: 31 January 2012 12:20
To: 'pestlist@museumpests.net'
Subject: [pestlist] RE: Beehives

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Hi Abby,

Just to clarify:  do you mean a beehive as in the wooden, box-type with 
multiple honey comb frames in?  Will it be active or an empty one on display?  
Or is it the kind found in nature?  Just some passing thoughts

My two cent - Active or inactive, I can't imagine it not having some impact on 
the IPM.  If it is a newly made box-type hive, I suppose you could have that 
chance of wood boring insects.  I have also read about other insects taking up 
residence in active hives, mites, wax moths (don't know anything about these 
guys as a threat to anything, just that they get ignored by the bees), even 
mice!  Then, yes, as you mentioned, this potential for dead insects in the hive 
= food for baddies.

OK, anyway, this is assuming an active hive, I'll stop now. :)

Best,

Matt Mickletz

From: ad...@museumpests.net [mailto:ad...@museumpests.net] On Behalf Of Abigail 
K Stevens
Sent: Tuesday, January 31, 2012 4:47 AM
To: pestlist@museumpests.net
Subject: [pestlist] Beehives

Dear all,

Our Museum is keen to install a beehive somewhere around our building. 
Obviously this is of concern to me, as I don't want to be introducing lots of 
insects that can find their way into the building and die, thus becoming a food 
source for more threatening pests. I was just wondering if anyone has had any 
experience of the kind of impact a beehive can have on IPM, and can highlight 
any potential problems or ways of reducing the risk that a hive might cause?

Many thanks in advance,
Abby

Abby Stevens
Preventive Conservator
Manchester Museum & Whitworth Art Gallery

0161 3061590 or 07825011011
abigail.k.stev...@manchester.ac.uk

Monday, Tuesday & Friday - Museum
Wednesday & Thursday - Gallery


[Image removed by sender.]


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[pestlist] RE: Beehives

[Abigail K Stevens]

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Thanks Matt,

Yes it would be an active hive, the wooden box type, with honey bees I think. 
Like you said, I had heard of other pests taking up residence in hives, but 
wasn't sure which pests. We have had problems in the past with Reesa vespulae 
beetles, which like eating dead insects, and so I'm particularly worried about 
the bees encouraging them!

Thanks for your comments,
Abby

From: ad...@museumpests.net [mailto:ad...@museumpests.net] On Behalf Of Matthew 
Mickletz
Sent: 31 January 2012 12:20
To: 'pestlist@museumpests.net'
Subject: [pestlist] RE: Beehives

This is a message from the Museumpests List.
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Hi Abby,

Just to clarify:  do you mean a beehive as in the wooden, box-type with 
multiple honey comb frames in?  Will it be active or an empty one on display?  
Or is it the kind found in nature?  Just some passing thoughts

My two cent - Active or inactive, I can't imagine it not having some impact on 
the IPM.  If it is a newly made box-type hive, I suppose you could have that 
chance of wood boring insects.  I have also read about other insects taking up 
residence in active hives, mites, wax moths (don't know anything about these 
guys as a threat to anything, just that they get ignored by the bees), even 
mice!  Then, yes, as you mentioned, this potential for dead insects in the hive 
= food for baddies.

OK, anyway, this is assuming an active hive, I'll stop now. :)

Best,

Matt Mickletz

From: ad...@museumpests.net [mailto:ad...@museumpests.net] On Behalf Of Abigail 
K Stevens
Sent: Tuesday, January 31, 2012 4:47 AM
To: pestlist@museumpests.net
Subject: [pestlist] Beehives

Dear all,

Our Museum is keen to install a beehive somewhere around our building. 
Obviously this is of concern to me, as I don't want to be introducing lots of 
insects that can find their way into the building and die, thus becoming a food 
source for more threatening pests. I was just wondering if anyone has had any 
experience of the kind of impact a beehive can have on IPM, and can highlight 
any potential problems or ways of reducing the risk that a hive might cause?

Many thanks in advance,
Abby

Abby Stevens
Preventive Conservator
Manchester Museum & Whitworth Art Gallery

0161 3061590 or 07825011011
abigail.k.stev...@manchester.ac.uk

Monday, Tuesday & Friday - Museum
Wednesday & Thursday - Gallery


[Image removed by sender.]


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<>

[pestlist] RE: Beehives

[Matthew Mickletz]

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Hi Abby,

Just to clarify:  do you mean a beehive as in the wooden, box-type with 
multiple honey comb frames in?  Will it be active or an empty one on display?  
Or is it the kind found in nature?  Just some passing thoughts

My two cent - Active or inactive, I can't imagine it not having some impact on 
the IPM.  If it is a newly made box-type hive, I suppose you could have that 
chance of wood boring insects.  I have also read about other insects taking up 
residence in active hives, mites, wax moths (don't know anything about these 
guys as a threat to anything, just that they get ignored by the bees), even 
mice!  Then, yes, as you mentioned, this potential for dead insects in the hive 
= food for baddies.

OK, anyway, this is assuming an active hive, I'll stop now. :)

Best,

Matt Mickletz

From: ad...@museumpests.net [mailto:ad...@museumpests.net] On Behalf Of Abigail 
K Stevens
Sent: Tuesday, January 31, 2012 4:47 AM
To: pestlist@museumpests.net
Subject: [pestlist] Beehives

Dear all,

Our Museum is keen to install a beehive somewhere around our building. 
Obviously this is of concern to me, as I don't want to be introducing lots of 
insects that can find their way into the building and die, thus becoming a food 
source for more threatening pests. I was just wondering if anyone has had any 
experience of the kind of impact a beehive can have on IPM, and can highlight 
any potential problems or ways of reducing the risk that a hive might cause?

Many thanks in advance,
Abby

Abby Stevens
Preventive Conservator
Manchester Museum & Whitworth Art Gallery

0161 3061590 or 07825011011
abigail.k.stev...@manchester.ac.uk

Monday, Tuesday & Friday - Museum
Wednesday & Thursday - Gallery


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[pestlist] Beehives

[Abigail K Stevens]

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Dear all,

Our Museum is keen to install a beehive somewhere around our building. 
Obviously this is of concern to me, as I don't want to be introducing lots of 
insects that can find their way into the building and die, thus becoming a food 
source for more threatening pests. I was just wondering if anyone has had any 
experience of the kind of impact a beehive can have on IPM, and can highlight 
any potential problems or ways of reducing the risk that a hive might cause?

Many thanks in advance,
Abby

Abby Stevens
Preventive Conservator
Manchester Museum & Whitworth Art Gallery

0161 3061590 or 07825011011
abigail.k.stev...@manchester.ac.uk

Monday, Tuesday & Friday - Museum
Wednesday & Thursday - Gallery



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