Fig. 17From: Evaluation of novel cleaning systems on mock-ups of unvarnished oil paint and chalk-glue ground within the Munch Aula Paintings ProjectImage of a M2 Pd mock-up before (BC) and after (AC) cleaning with CO2-snow indicate less surface soiling (rating 3). Minimal pigment loss was observed on 1 of 3 M2-Pd mock-ups cleaned with this technique as shown in square (overall satisfactory rating of 4)Back to article page