Fig. 19From: Evaluation of novel cleaning systems on mock-ups of unvarnished oil paint and chalk-glue ground within the Munch Aula Paintings ProjectMicrograph (×5 and ×20 objective lenses) of a M2-G mock-up before (BC) and after (AC) cleaning with Nanorestore Gel® MWR indicate good soiling removal (rating 5) and slight loss of fragments of the ground (rating 4) (arrows)Back to article page