Regarding the Anoxibug, I have a new sensor and a couple that range in age from about 6-12 months old (stored oxygen free) that will be tested against calibrated Systech Illinois systems sensors at a range of calibrations (0.2, 0.1, and 0.01% O2) on the 28th of October. If you have sensors (anoxibug or otherwise) you rely on with known provenance (purchase date/storage conditions), I can include those sensors in this test if you’re able to get them to me by the 28th. I can return after the test and can share the results at least on this forum… Please email me directly if you would like to add your sensor to the mix.
Eric -- Eric Breitung Research Scientist Department of Scientific Research 212 396 5390 The Metropolitan Museum of Art 1000 Fifth Avenue New York, NY 10028 @metmuseum<https://www.instagram.com/metmuseum> metmuseum.org<http://www.metmuseum.org/> From: [email protected] <[email protected]> On Behalf Of Todd Holmberg Sent: Tuesday, October 22, 2019 12:08 PM To: [email protected] Subject: [External] - Re: [pestlist] Treatment for red-legged Ham Beetle Hello Everyone, Speaking of anoxic treatments... I was wondering if anyone out there has experience with Hanwell's "AnoxiBug" unit. https://hanwell.com/app/uploads/sites/3/O2-AI-datasheet-US.pdf I have seen differing opinions online regarding when the O2 indicator light switches. I have seen figures ranging from ".5%, .2%, and .02%". Based on some of the percentages mentioned in the above comments (1% and 3%), it seems like it may be important to confirm whether or not the light is/isn't switching at .5%. Part of my confusion probably has to do with me misunderstanding scientific terminology. In the manual that came with the unit, it says: "Nominal O2 Threshold is 0.5%". And then in Hanwell's link above it says: "The unit provides users with clear indication that oxygen levels have reached 0.2%." I am also curious if anyone knows where to buy the "replaceable O2 sensor part" that fit into these units. It seems like the sensor degrades relatively quickly overtime even when kept out of open air (1-2 years?). Given the level of precision needed to confirm satisfactory O2 levels, it seems like Anoxibug users would need to be purchasing the new replaceable sensor part somewhat frequently. Does anyone know of any distributors that sell these along with some sort of "freshness guarantee" giving you piece of mind it isn't a sensor that has been sitting on a shelf somewhere for a long time? If anyone has any thoughts on any of the above questions, I would be very interested to hear them. Thanks, -Todd On Tue, Oct 22, 2019 at 10:24 AM Kelvin E. Ong (Micrographics Data) <[email protected]<mailto:[email protected]>> wrote: Hi Stephan, No worries. Always learning. Shin, Kerstin (2003). It is less than 0.3% and not 0.3% for oxygen level and 55%RH. As mentioned earlier, it is still recommended to be at least 14 days or more of course. By the way, where could I find Bill’s findings? Would love to read it. Best Rgds Kelvin [cid:16df413dc17868ea0aaa] Kelvin E. Ong Sales Director Micrographics Data Pte Ltd [cid:16df413dc17e0b8daf6b] +65 64727255<tel:+65%2064727255> [cid:16df413dc172b79d1ccc] +65 97276178<tel:+65%2097276178> [cid:16df413dc17c2045cd5d] [email protected]<mailto:[email protected]> [cid:16df413dc1792d3e437e] www.micrographicsdata.com<https://www.micrographicsdata.com/> Follow us: [Facebook]<https://www.facebook.com/MicrographicsD/> [LinkedIn]<https://www.linkedin.com/company/micrographics-data/> [Twitter]<https://twitter.com/micrographics_d> [cid:16df413dc189c90c69612] 115A Commonwealth Drive #02‑10 & #02‑13/16 Singapore 149596 From: [email protected]<mailto:[email protected]> <[email protected]<mailto:[email protected]>> On Behalf Of Stephan Biebl Sent: Tuesday, 22 October 2019 11:00 PM To: [email protected]<mailto:[email protected]> Subject: AW: [pestlist] Treatment for red-legged Ham Beetle Kelvin, sorry for my critical demand, but from where do you take the dates “8 days with 0.3% O2 and 25°C”? Which literature or practical experience? I think, this is definitely to short for many insect pests, like the larvae of the webbing cloth moth or the furniture beetle especially inside close materials. In December 2018 Bill Landsberger from Germany presented latest results of a Nitrogen Anoxic treatment survey with 3 weeks with 0.5% and 24°C at our IPM-conference in Munich. This dates are from a study 2018 in Berlin-Germany with many different museums insect pests. Same results came from different researchers like Selwitz and Maekawa (1998), Valentine (1991), Gilberg M (1991) etcetera Rust, Kennedy (1993) wrote 8 days with 0.1% and 25,5°C – but only for Lasioderma ser. stored in wire-cages. Most of these short time results are from early laboratory researchers and not from practical experts. See also 2-6 weeks after the recommendations of the Museum Pest Networke site: http://museumpests.net/solutions-nitrogenargon-gas-treatment/ Best Regards Stephan Von: [email protected]<mailto:[email protected]> <[email protected]<mailto:[email protected]>> Im Auftrag von Kelvin E. Ong (Micrographics Data) Gesendet: Dienstag, 22. Oktober 2019 16:26 An: [email protected]<mailto:[email protected]> Betreff: RE: [pestlist] Treatment for red-legged Ham Beetle Hi Amanda, You can use Nitrogen Anoxic treatment. All lifeforms of the majority of insect species can be eradicated within eight days at oxygen concentrations of less than 0.3% at 50% RH and 25°C. For practical purpose, its recommended for a 14 days treatment, two days for establishing anoxic conditions in the enclosure, plus a safety margin of some 50% more than the experimentally proved survival time of common pests for the above mentioned 3 parameters (less than 0.3% oxygen, 50% RH and 25°C) However, at temperatures below 25°C there must be an increase in treatment time of about 50% for each 5°C decrease; that is, about twenty-two days will be required at 20°C. Hope it helps Best Rgds Kelvin [cid:16df413dc164ce8e91] Kelvin E. Ong Sales Director Micrographics Data Pte Ltd [cid:16df413dc165b16b22] +65 64727255<tel:+65%2064727255> [cid:16df413dc16692e333] +65 97276178<tel:+65%2097276178> [cid:16df413dc167745b44] [email protected]<mailto:[email protected]> [cid:16df413dc16855d355] www.micrographicsdata.com<https://www.micrographicsdata.com/> Follow us: [Facebook]<https://www.facebook.com/MicrographicsD/> [LinkedIn]<https://www.linkedin.com/company/micrographics-data/> [Twitter]<https://twitter.com/micrographics_d> [cid:16df413dc16bdbb399] 115A Commonwealth Drive #02‑10 & #02‑13/16 Singapore 149596 From: [email protected]<mailto:[email protected]> <[email protected]<mailto:[email protected]>> On Behalf Of Amanda Robinson Sent: Tuesday, 22 October 2019 9:52 PM To: [email protected]<mailto:[email protected]> Subject: [pestlist] Treatment for red-legged Ham Beetle I am curious if others have come across the red-legged ham beetle (Necrobia rufipes) and can share the appropriate course of treatment. At the moment, our pest management provider has recommended two courses of action: argon treatment for at least 24 hours, or freezing for at least 48 hours. Both timelines seem very short to me and I want to make sure we are eradicating this pest issue completely. The affected specimen is a bull skull with horns. The piece is in an enclosed case with dried gourds and books (a memento mori style case). We are confident the infestation is limited to this case, which is sealed, and we do intend to treat the entire contents of this case. Any advice or guidance would be most appreciated. Thank you, Amanda -- Amanda A. 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