Email digest for the Global Conservation Forum (ConsDistList) egroup. ------------------------------------------------------------------------------------------------------------
1. IAP Virtual seminar: History of Pigments (from the 18th century to the present day) 2. RE: mold remediation in collections 3. RE: Replacement software for Nikon's Camera Control Pro 4. RE: mold remediation in collections ------------------------------------------------------------------------------------------------------------ 1.From: James Black Posted: Sunday September 28, 2025 2:36 PM Subject: IAP Virtual seminar: History of Pigments (from the 18th century to the present day) Message: History of Pigments (from the 18th century to the present day) Date: Thursday, 9 October 2025 Tutor: Tracey Chaplin Price: £25.00 Platform: Zoom Time: This seminar will start at 3pm BST There will be a 55 minute presentation followed by 15 minutes of discussion. Please register on Eventbrite. <https://www.eventbrite.co.uk/e/1693186208529?aff=oddtdtcreator> This virtual seminar (the second in a series* of 4 virtual seminars on the History and Identification of Pigments to be offered in October) discusses the pigments used in painting from the early 18th century onwards, introducing their chemistries, production methods and dates of use. The palettes used during this time period will be divided into 18th, 19th, early 20th and 20th/21st centuries, with the continuation of the use of natural pigments such as ochres, carbon blacks, chalk and cinnabar included, and the introduction of further synthetic pigments such as zinc white, cobalt blue, ultramarine blue, Scheele’s green, chrome yellow, titanium white, azo reds & phthalocyanine blue described. (The history of pigments until the 18th century will be discussed in an IAP Virtual seminar on 2nd October, and seminars on 16th and 23rd October will discuss the Identification of Pigments). *This series of seminars is intended to appeal to all conservators and others who would like to refresh their knowledge on the subject and also to students of conservation. Tracey Chaplin is an Independent Scientific Consultant specialising in analysis and identification of artists’ materials and their degradation products on objects such as paintings, sculpture, furniture, manuscripts, wallpaper, textiles and architectural elements. This includes the application of microscopy, cross-sectional analysis, spectroscopies, scanning electron microscopy (SEM), energy dispersive X-ray (EDX) analysis, X-ray fluorescence and gas chromatography mass spectrometry (GC-MS). Tracey lectures in conservation science at the City and Guilds of London Art School, has published extensively and is one of four authors of The Pigment Compendium. ------------------------------------------- ------------------------------------------- ------------------------------ James Black Co-ordinator International Academic Projects London www.academicprojects.co.uk ------------------------------ 2.From: D. Thor Minnick Posted: Sunday September 28, 2025 2:36 PM Subject: RE: mold remediation in collections Message: Hello to all, I am a bit puzzled that so little information is available concerning the use of "chlorine dioxide" for mold remediation in the conservation field. It is used in so many industries as a fungicide, bactericide, and virucide. It is used in municipal water treatment plants for drinking water, vegetable/fruit washes, and slaughter house associated uses. As a gas, it was used to eliminate the anthrax spore attack of 2001 in The Senate Hart Office Building. ClO2 is not the same as "bleach" but is an oxidizer and certainly is capable of "bleaching" if used in too high a concentration or for too long an exposure time. A search on CoOL will bring these listings up: https://cool.culturalheritage.org/search.html?cx=001380950021459995551:ivvcscwhhgg&cof=FORID:10&ie=UTF-8&q=%22chlorine+dioxide%22&sa=Search&siteurl=cool.culturalheritage.org/search.html&ref=&ss=0j0j1 <https://cool.culturalheritage.org/search.html?cx=001380950021459995551:ivvcscwhhgg&cof=FORID:10&ie=UTF-8&q=%22chlorine+dioxide%22&sa=Search&siteurl=cool.culturalheritage.org/search.html&ref=&ss=0j0j1> I have successfully used it in the treatment of mold on leather and closed bookcases several times over the past several years.. It can be used as a dilute solution of the dissolved gas in water or as the gas. The gas can easily be generated from NaClO2 and an acid (of your choice) or from a convenient tablet form available here: https://safrax.com <https://safrax.com/>. This commercial site has a lot of ancillary but useful information on it as well as easy to use calculators to arrive at desired concentrations of the gas or solution. Look forward to hearing from others who have used it successfully. Sincerely, ________________________________ D. Thor Minnick 913 Waimanu St. Honolulu, HI 96814 808 597 8142 Minnickassociates.com ------------------------------ D. Thor Minnick Conservator Minnick Associates Honolulu United States ------------------------------ ------------------------------------------- Original Message: Sent: 09-26-2025 11:14 From: Alice Paterakis Subject: mold remediation in collections Dear Colleagues, We have organic and inorganic objects with mold contamination and want to determine the best way of cleaning and decontaminating these objects before bringing them into our collection space. We also wonder if freezing kills all forms of mold ? If so, what temperature and duration is required? The objects are currently stored in lockers off-site. We had one company analyze swabs that confirmed mold but did not identify species. Do PPE and protocols depend on species found? We are currently looking at the Midwest Mold Removal company that uses GM2000 (a Goldmorr System product for mold and spore elimination) and an anti-microbial disinfectant. The MSDS for GM2000 does not identify the ingredients of the product! We are looking for recommendations for mold remediation companies that people have used and are happy with. Any advice you can send would be most appreciated. Thank you, Alice Boccia Paterakis Head of Conservation Missouri Historical Society St. Louis MO 63105 [email protected] <[email protected]> . 3.From: Athanasios Velios Posted: Sunday September 28, 2025 2:36 PM Subject: RE: Replacement software for Nikon's Camera Control Pro Message: Hello, if you are willing to try open source software, gPhoto2 (http://gphoto.org/) may be a good option. I cannot see D850 in the list of supported cameras, but D800 is there and it may be compatible (http://gphoto.org/doc/remote/). I have previously configured a digital camera setup with gPhoto2 where most of the image capture process was automated. It has great potential. Good luck with it. Thanasis ------------------------------ Dr Athanasios Velios Reader in Documentation ------------------------------ ------------------------------------------- Original Message: Sent: 09-24-2025 17:55 From: Geneva Griswold Subject: Replacement software for Nikon's Camera Control Pro Hi all, We seek a replacement tethering software (Nikon D850 compatible) for Camera Control Pro 2, which Nikon no longer supports. Camera Control Pro was replaced by NX Tether, but the latter supports very few DSLR models. We follow the Adobe Bridge workflow in the AIC Guide to Digital Photography and Conservation Documentation, 2nd and 3rd eds). Capture One ($) and DigiCamControl (free) both support Nikon D850. Does anyone have experience with one or the other? All software recommendations would be appreciated. Thank you, Geneva ------------------------------ Geneva Griswold Objects Conservator Seattle Art Museum [email protected] <[email protected]> ------------------------------ 4.From: Stefanie Scheerer Posted: Sunday September 28, 2025 2:37 PM Subject: RE: mold remediation in collections Message: Dear Alice, the most important part of any mold remediation process is cleaning the mold off the objects surface. This can be a time consuming teadious work, however it is essential since the fungal structures bear the main health hazard and the spores may spread onto other objects. In tearms of hazards we are talking about allergic reactions, toxic reactions and infections. Infections are highly unlikely for people with a normal functioning immune system, also most fungi we encounter in cultural heritage collections cannot grow at body temperature. Toxic and substances and particularly allergic components may be present in the fungal structures that grow on objects, however after thoroughly cleaning their surface these fungal structures may not become airborne anymore, whis is the main path of entrance into the body or spreading of the fungus onto other objects. (the main path of entry for toxins in ingestion, which is more a food related concearn, however skin contact should be avoided)Toxic substances and allergens remain a health hazard even after killing the fungus! Hence by killing it you basically only eliminate the possibility of an infection, which is the least likely health hazard. If you clean the object without killing the fungus you need to control environmental conditions properly, especially humidity, to prevent the fungus from growing again, which would mean that it produces spores again, which may become airborne and hence can be inhaled. Freezing unfortunately does not kill fungi, actually for longterm storage of fungi they can be kept in liquid nitrogen (-196Celcius!) Hope this helps, if you have further questions feel free to contact me Best wishes,Stefanie _______________________________________________________________________ Dr. Stefanie Scheerer BioPhil - Microbiology & Conservation Netzwerk Bau und Forschung <https://netzwerk-bauundforschung.com/dr-stefanie-scheerer-dipl-restauratorin-mikrobiologin/> Bockelstr. 3270619 Stuttgarttel. +49-711-91275899mobil +49-151-22826214 ------------------------------------------- Original Message: Sent: 9/26/2025 11:15:00 AM From: Alice Paterakis Subject: mold remediation in collections Dear Colleagues, We have organic and inorganic objects with mold contamination and want to determine the best way of cleaning and decontaminating these objects before bringing them into our collection space. We also wonder if freezing kills all forms of mold ? If so, what temperature and duration is required? The objects are currently stored in lockers off-site. We had one company analyze swabs that confirmed mold but did not identify species. Do PPE and protocols depend on species found? We are currently looking at the Midwest Mold Removal company that uses GM2000 (a Goldmorr System product for mold and spore elimination) and an anti-microbial disinfectant. The MSDS for GM2000 does not identify the ingredients of the product! We are looking for recommendations for mold remediation companies that people have used and are happy with. Any advice you can send would be most appreciated. Thank you, Alice Boccia Paterakis Head of Conservation Missouri Historical Society St. Louis MO 63105 [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. 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