Hi Meg,
Thanks for writing in! Fran Ritchie presented on Arsenic in Collections on the C2C site back in 2023 and had recommended two different kits: This one is just 5 tests (possibly more to your needs since it's a one-off item). A PDF of her presentation is here, the kits are listed on page 27.
If you want more information, I highly recommend Fran's whole talk and presentation which can be found here: Arsenic in Collections
All the best,
Liz
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Elizabeth Peirce
C2C Care Community Monitor 7/21-8/3
Conservator (Objects)
Library of Congress
Washington DC
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