Removal of casein adhesives and paints

In response to Debra K. Selden question about removal of casein from
oil paint, I would suggest to try mildly acidic (ph>4) solutions,
such as formic or acetic acids with an addition of a detergent ot a
solvent to improve wettability. I found such solutions effective,
although slow acting, for removal of protein-based overpaints,
especially so in this case, where the layer of casein should contain
acid soluble carbonates.

Adam Karpowicz

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                  Conservation DistList Instance 9:47
                Distributed: Wednesday, December 6, 1995
                        Message Id: cdl-9-47-003
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