Eric- Thanks! It's interesting because according to our HOBO, there was a pretty significant gradual increase in RH over the course of the treatment even though we were using the Mitzubishi brand eaters (approx 5% rise over 21 days). I put silica gel in the envelope that was conditioned at "50%". The RH rise has me thinking about trying 40-45% gel for future treatments to try and keep it further away from flirting with the dreaded "60% line".
Thanks- Todd On Thu, Jun 27, 2024 at 12:46 PM Breitung, Eric <eric.breit...@metmuseum.org> wrote: > Those look more like meat sticks than oxygen absorbers. Just kidding…I > believe the Mitsubishi absorbers also claim to control humidity in the > package. Unclear whether the ULINE product is doing the same, but > maintaining humidity is often important for sensitive cultural heritage > material stability. > > > > Eric > > > > > > > > *From:* pestlist@googlegroups.com <pestlist@googlegroups.com> *On Behalf > Of *Todd Holmberg > *Sent:* Thursday, June 27, 2024 1:42 PM > *To:* pestlist@googlegroups.com > *Subject:* [External] - [PestList] Anoxic Treatment Protocols > > > > Hello Pest list- > > > > I am curious if anyone has used these oxygen absorbers from ULINE for > anoxic treatments: > > > > https://www.uline.com/BL_288/Oxygen-Absorbing-Packets > > > > The ones we have used in the past were from Mitsubishi. We have an > account with Uline, so ordering these would be a little more convenient. I > wasn't sure if there were differences between absorbers and if there would > be a reason to be cautious about using "any packet that is an oxygen > absorber". > > > > According to MuseumPest.net: > > - Care must be taken to select the proper oxygen scavenger. Some > oxygen scavengers contain an added desiccant (e.g. RP Type A), which could > decrease the equilibrium > > Also, when considering performing an anoxic treatment on an "oil on > canvas" painting, are there other critical concerns other than prussian > blue? > > > > The general specs of the treatment will be: > > -In a Marvelseal envelope with oxygen eaters > > -Flushed with nitrogen gas > > -Temp around 70 F (room temp) > > -RH in the 50%'s > > -Duration 21 days > > > > If anyone has insight into these Uline absorbers, or thoughts about > the specs above, I would be grateful to hear what your thoughts are. > > > > > > Thanks! > > Todd > > -- > You received this message because you are subscribed to the Google Groups > "MuseumPests" group. > To unsubscribe from this group and stop receiving emails from it, send an > email to pestlist+unsubscr...@googlegroups.com. > To view this discussion on the web visit > https://groups.google.com/d/msgid/pestlist/CAMxAh%2Bi4MPoB8skhM7NO8%3Duk1ZDnQzKqr%3DO9_zSUTsps8zdVFw%40mail.gmail.com > <https://groups.google.com/d/msgid/pestlist/CAMxAh%2Bi4MPoB8skhM7NO8%3Duk1ZDnQzKqr%3DO9_zSUTsps8zdVFw%40mail.gmail.com?utm_medium=email&utm_source=footer> > . > > -- > You received this message because you are subscribed to the Google Groups > "MuseumPests" group. > To unsubscribe from this group and stop receiving emails from it, send an > email to pestlist+unsubscr...@googlegroups.com. > To view this discussion on the web visit > https://groups.google.com/d/msgid/pestlist/DS0PR05MB9221978215CC801C91B8C893E3D72%40DS0PR05MB9221.namprd05.prod.outlook.com > <https://groups.google.com/d/msgid/pestlist/DS0PR05MB9221978215CC801C91B8C893E3D72%40DS0PR05MB9221.namprd05.prod.outlook.com?utm_medium=email&utm_source=footer> > . > -- You received this message because you are subscribed to the Google Groups "MuseumPests" group. To unsubscribe from this group and stop receiving emails from it, send an email to pestlist+unsubscr...@googlegroups.com. To view this discussion on the web visit https://groups.google.com/d/msgid/pestlist/CAMxAh%2BjDUuTcdjY0garUGK5G0BPi2kvvQ4gfo-%2Bb4r4gVJzj0g%40mail.gmail.com.
