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Scheme 2 | Heritage Science

Scheme 2

From: Cleaning testing of nineteenth-century plaster surface models with thin polyacrylamide-based gel layers attached to flexible polyethylene films

Scheme 2

SAG swollen in the effective aqueous solution was placed on the soiled plaster surface facing with the hydrogel side to the plaster (i). The SAG was removed after 1 min of contact leaving the plaster surface cleaner (ii). The remaining soil particles were then removed by gently rolling a dry cotton swab over the treated plaster surface (iii, iv)

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