Fig. 22From: Evaluation of novel cleaning systems on mock-ups of unvarnished oil paint and chalk-glue ground within the Munch Aula Paintings ProjectImages of a M2-Pd mock-up before (BC) and after (AC) cleaning with Nanorestore Gel® MWR indicate satisfactory surface soiling (rating 4). Pigment loss, as shown in the square, was observed on one of three mock-ups cleaned with this technique (rating 2–4, average 3)Back to article page