Email digest for the Global Conservation Forum (ConsDistList) egroup. ------------------------------------------------------------------------------------------------------------
1. RE: Freezer Logger Recommendations 2. RE: Dye Machine 3. Job Opportunity: Object or Furniture Conservator 4. Seeking perspectives from Architectural & Built Heritage Conservation 5. Degradation of light yellow glass in leadlights in insulating glass units 6. Newly acquired conservation titles available in the Getty Library's Conservation Collection ------------------------------------------------------------------------------------------------------------ 1.From: Natalie Mitchell Posted: Monday December 8, 2025 10:04 AM Subject: RE: Freezer Logger Recommendations Message: Hi Elly, We used Logtag data loggers, which I thought were pretty good. They seem to have a good range of options depending on your needs. Like other manufacturers recommended here, they are primarily used for other industries like pharmaceuticals so they have to be reliable. I think they distribute in the US too! We did not have Wi-Fi where our freezer was located, but I could at least download the data after freezing cycles to double check it was all running as it should. The Logtags are really small and convenient to pop inside any crates/boxes you may have packed to go through, whilst they should be fine it is always nice to have that reassurance everything is getting down to temperature! For reference we had a 40ft freezer which was running at -40 degrees Celsius. Best of luck, Natalie ------------------------------ Natalie Mitchell Conservator The Powell-Cotton Museum Kent, United Kingdom ------------------------------ ------------------------------------------- Original Message: Sent: 12-04-2025 09:50 From: Elly Stewart Davis Subject: Freezer Logger Recommendations Hi everyone, My institution has acquired a walk in freezer for our new museum building. I am working on establishing our new freezing procedures and am in the market for a few loggers to track that objects are being held at the correct temperature for the duration of their freezing. We currently use HOBO MX1101s for our galleries and collection storage, but I am not satisfied with HOBOs options for low temperature loggers. Our freezer is capable of reaching -50F. Does anyone have any experience or recommendations for low temp loggers they would be willing to share? Thanks! ------------------------------ Elly Stewart Davis Assistant Objects Conservator Gilcrease Museum Tulsa United States ------------------------------ 2.From: Maeve O'Shea Posted: Monday December 8, 2025 10:04 AM Subject: RE: Dye Machine Message: Hi Lauren, At HFC we have an AHIBA Nuance Eco IR that was purchased in 2003. We have the 150 mL beakers (15 total). Because of its age the design and function is a bit different than the current models, and it isn't compatible with some of the newer add-ons. For example I would love to experiment with the self-dosing lids, but they would not work with our machine. Our machine was idle for many years, and one of my projects has been getting it back up and running. I have liked using it, and while it is a lot of set up for each run, it is so nice to be able to walk away after the dosing and get other work done. I've found that the dye doesn't exhaust as fully in the machine as it does when I dye on a stovetop, but I haven't noticed a real difference in the end result. I've only used it with lanaset dyes, with various wool, silk, and nylon fabrics. One time we tried dyeing wool roving in it and they were little felted pucks when they came out. Our machine can only save 3 programs (I'm assuming more modern machines can probably hold more). I've tried out a few different liquor ratios and fabrics, and the only failure has been trying to dye crepeline with a 5:1 ratio (it's just too bouncy and lightweight for that tiny amount of liquid to get it thoroughly submerged) but 10:1, 20:1, and 30:1 have all worked well. That means that with our beaker size and the machine's maximum volume suggestions the maximum weight that we can dye in the machine is 9 grams. We mostly use it for 1g samples and then dye the full piece on the stovetop, but if we need less than 9g of something (which definitely does happen!) we can do it fully in the machine. If I were to upgrade our machine I would want larger beakers. The 150 mL size gives you the greatest number of beakers (15) but I almost never need all of them. I would prefer the ability to dye larger amounts of fabric over having that many samples. You have to keep the wheel balanced, so for 15 beakers that means you either need to use 3, 5, or all 15 beakers (running any un-used beakers with the same weight/volume of water as the ones with samples). It also came with a very fancy syringe that seems to have been designed for mass poultry vaccination. I do not use the syringe. I use simple syringes (the disposable kind, though I wash and re-use) and V bottom vials instead. I don't know if they had to buy the syringe with the machine, but if I had the option I would leave off the fancy syringe, it's just collecting dust. Hopefully some of that info is helpful! ------------------------------ Maeve O'Shea Winchester United States ------------------------------ ------------------------------------------- Original Message: Sent: 12-05-2025 13:48 From: Lauren Van Dessel Subject: Dye Machine Dear colleagues, My department has the opportunity to purchase a dye machine and I would be grateful to hear from anyone who works with one (or has ever used one). Specifically, I would like to know the machine make and model, a little about your experience using it, and (if possible) the year purchased and price paid. I am currently speaking with Datacolor to understand all the technical specifications of their AHIBA IR. However, we're hesitant to invest in anything without exploring all possible options and having more insight into people's experience using them. Thank you and best wishes, Lauren ------------------------------ Lauren Van Dessel [she/her] Postgraduate Fellow in Textile Conservation Yale University Art Gallery New Haven, CT ------------------------------ 3.From: Torunn Bøe Posted: Monday December 8, 2025 10:06 AM Subject: Job Opportunity: Object or Furniture Conservator Message: We are seeking a permanent, full-time Object or Furniture Conservator to join our friendly team at Bevaringstenestene, The Museum Centre in Hordaland, located in Bergen, Norway. The position primarily involves condition assessment and remedial conservation of cultural heritage objects. Additional responsibilities may include: Condition assessment and conservation of church interiors Preventive conservation, such as packing, cleaning, and condition assessment for storage Preparing loan reports for exhibitions, packing objects for transport, and assisting with exhibition installation Cleaning historic interiors (housekeeping) Writing reports related to consulting services, conservation, and treatment proposals Occasionally delivering courses and presentations for museum staff and external clients Further information can be found on our website: Object or Furniture Conservator (280131) | The Museum Centre in Hordaland (MuHo) <https://www.jobbnorge.no/en/available-jobs/job/280131/object-or-furniture-conservator> ------------------------------ Torunn Kojan Bøe Head of Conservation Department Bevaringstenestene Museumssenteret i Hordaland Bergen, Norway ------------------------------ 4.From: Lindsey Williams Posted: Monday December 8, 2025 2:23 PM Subject: Seeking perspectives from Architectural & Built Heritage Conservation Message: The Green Tea <https://open.spotify.com/show/3b5jkqeiZEVasHKHZNlMf1> podcast is soliciting perspectives from conservators and preservation professionals in the Architectural or Built Heritage specialties concerning sustainable practices or paradigm shifts for episodes in the 2026 season. We're interested in hearing from folks who have: Compared different treatment methods for toxicity, safety, and efficacy. Integrated new technologies into treatment or assessment practices towards a more holistic perspective. Completed case studies or projects that showcase the long-term implications of specific 'greener practices' on various materials, successful or otherwise. Prioritized preventive conservation practices as adaptive measures against climate change. Consulted with regionally-specific or traditional knowledge keepers concerning their built heritage as part of treatment practice. Attended a conference, symposium, or training that engaged with sustainable paradigms or practices. We welcome early career as well as experienced practitioners to lend their voice and are open to ideas beyond the short list above. Our podcast is global in reach, so projects based in any part of the world are welcome and offer a glimpse into how different regions are navigating the impact of the global phenomenon that is climate change. If you or someone you know has participated in projects such as these, please reach out to [email protected] with the subject heading "Green Tea". Gratefully, Lindsey for Green Tea ------------------------------ Lindsey Williams Conservation Technician ------------------------------ 5.From: Janneke van der Stok Posted: Monday December 8, 2025 2:24 PM Subject: Degradation of light yellow glass in leadlights in insulating glass units Message: Dear community, Recently, several glaziers in the Netherlands have experienced a very peculiar degradation phenomenon in historic light yellow glass. When present in a lead panel, and subsequently placed in an insulating glass unit, the surface of the glass starts to flake off in a specific pattern, making the glass semi-transparent (see attached image). This process can already take place after a few weeks. It appears that light yellow mouthblown cylinder glass with a slightly undulated surface (often called Goethe glass) from around 100 years old is specifically prone to this. We, at the Cultural Heritage Agency of the Netherlands, would now like to know what is actually happening and why, so that we can identify glass at risk and try to prevent this from taking place in the future. There are a lot of variables playing a possible role: the microclimate with elevated temperatures, relative humidity, possible offgassing of putty/sealant/solder/…, the glass composition, the production process of the glass, the 'thermal history of the glass', the orientation of the window, et cetera. So as a start, we would like to know whether anyone has comparable experiences, and is willing to share this with us? Can anyone guide us towards literature about this very specific degradation phenomenon? Any other ideas are also very much appreciated! Thanks a lot for your help! With kind regards, Janneke van der Stok Janneke van der Stok, Ph.D. specialist (building) materials: glass, metal & cork ........................................................................................... Ministry of Education, Culture and Science Cultural Heritage Agency of the Netherlands Smallepad 5 | 3811 MG | Amersfoort P.O. Box 1600 | 3800 BP | Amersfoort | the Netherlands ........................................................................................... T +31 6 50 08 99 58 E [email protected] <[email protected]> ........................................................................................... present: Mo; Tue morning; Thu; Fri ........................................................................................... ------------------------------ Janneke van der Stok Materials specialist (glass, metal, cork) Cultural Heritage Agency of the Netherlands ------------------------------ 6.From: Sheila Cummins Posted: Monday December 8, 2025 10:38 PM Subject: Newly acquired conservation titles available in the Getty Library's Conservation Collection Message: Every month the Getty Conservation Institute (GCI) acquires new research materials for the Conservation Collection, housed in the Library at the Getty Research Institute (GRI). The collection represents an ongoing collaboration between the GCI and the GRI to acquire and retain critical resources required to fulfill the long-term research and scholarship needs of the international conservation community. In November we added books about historic sites in India, women in architecture, royal Portuguese artists of the 20th century, furniture restoration, historical gardens, sculpture in the classical periods, Swedish theater and costumes, and pigments made from vegetables. See the full list (PDF): https://bit.ly/44SCUm5 <https://bit.ly/44SCUm5?fbclid=IwZXh0bgNhZW0CMTAAYnJpZBExUWJKdHVySHN1RUg1aUlzUnNydGMGYXBwX2lkEDIyMjAzOTE3ODgyMDA4OTIAAR4-cLwTfrCuV3U8fBjzsyLbmb4lprfkh07SySiyxnMSAhwthhRT-R6RGbNbFQ_aem_kb8kd73m_qSlICbS8hzO_A> ------------------------------ Sheila Cummins Collection Development Librarian Getty Conservation Institute Los Angeles, CA 310-440-7619 [email protected] ------------------------------ You are subscribed to "Global Conservation Forum (ConsDistList)" as [email protected]. To change your subscriptions, go to http://community.culturalheritage.org/preferences?section=Subscriptions. To unsubscribe from this community discussion, go to https://community.culturalheritage.org/HigherLogic/eGroups/Unsubscribe.aspx?UserKey=d16eaa87-0f69-494b-9f2f-303dbc1222e1&sKey=fab9aa4f27a04c5d876e&GroupKey=757a8f16-505f-4323-8e74-e376757aa9f7.
