Fig. 16
Micrograph (×5 and ×20 objective lenses) of M2-G mock-up before (BC) and after (AC) cleaning with CO2-snow indicate moderate soiling removal (rating 3) and redeposition of soiling particle (arrow)
Fig. 16 | Heritage Science
Micrograph (×5 and ×20 objective lenses) of M2-G mock-up before (BC) and after (AC) cleaning with CO2-snow indicate moderate soiling removal (rating 3) and redeposition of soiling particle (arrow)