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KB, National Library of the Netherlands
Deventer
Netherlands

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Foekje Boersma

KB, National Library of the Netherlands

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RE: Returning a Collection after a new HVAC install

Posted By Foekje Boersma 04-23-2026 13:50
Found In Egroup: Connecting to Collections Care \ view thread
Hi Bonnie, Kelly already mentions some very useful tips in her reply. I would like to add the notion that climatizing an empty space is very different to climatizing a space filled with hygroscopic material. The collection will return to the space with a certain moisture content, and will make a new ...

RE: Determining Arsenic/heavy metals in a Green Coloured Cloth Bound Book published in 1893

Posted By Foekje Boersma 08-01-2025 07:57
Found In Egroup: Connecting to Collections Care \ view thread
Hi Margaret, At the KB National Library of the Netherlands we use a spot test for arsenic (Arsenic Test Strips, colorimetric 0.02-3 mg/L (As), MQuant ® | Sigma-Aldrich). Please note that these tests have to be conducted with proper safety measures, since it produces hazardous arsenic gas. We do ...