This is a message from the Museumpests List. To post to this list send it as an email to [email protected] 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: [email protected] Sent: Thursday, March 29, 2012 1:55 PM To: [email protected] 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 [email protected] 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: [email protected] 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 [email protected] 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 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 [email protected] ---------------------------------------------------------------------- To send an email to the list, send your msg to [email protected] To unsubscribe from this list send an email to [email protected] and in the subject put: "unsubscribe" - no quotes please. De: [email protected] [mailto:[email protected]] Em nome de ??? Enviada em: terça-feira, 27 de março de 2012 21:50 Para: [email protected] Assunto: [pestlist] Anoxic treatment This is a message from the Museumpests List. To post to this list send it as an email to [email protected] 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 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 [email protected] ---------------------------------------------------------------------- To send an email to the list, send your msg to [email protected] To unsubscribe from this list send an email to [email protected] 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 [email protected] with this command in the body: set mode digest pestlist Any problems email [email protected] or [email protected] ---------------------------------------------------------------------- To send an email to the list, send your msg to [email protected] To unsubscribe from this list send an email to [email protected] 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 [email protected] with this command in the body: set mode digest pestlist Any problems email [email protected] or [email protected] ---------------------------------------------------------------------- To send an email to the list, send your msg to [email protected] To unsubscribe from this list send an email to [email protected] 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 [email protected] with this command in the body: set mode digest pestlist Any problems email [email protected] or [email protected]
