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Heritage Science
Fig. 12 | Heritage Science

Fig. 12

From: Carbon dioxide snow cleaning of paper

Fig. 12

Examples of 3D optical micrographs of the Holmen paper contaminated by the Ivory Black (lower: before cleaning; upper: after cleaning) cleaned by a Wallmaster, b Wishab, c Groom/Stick, d Faber Castell, e nitrogen jet, and f CO2 snow jet

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