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Heritage Science
Fig. 10 | Heritage Science

Fig. 10

From: Identification of an unusual pale green material on the surface of an ancient Chinese bronze vessel and application of laser cleaning to its removal

Fig. 10

a Interface of the software. The red point “1” representing the first formula overlaps the point “S” representing the tetrahydrofuran. The blue point “2” representing the second formula is located in the center of the solubility area of Elvax 40W, defined by the black dotted line. In the table are reported volumetric proportions of solvents used for the two formulas. b The pale green material spread to the surrounding area during the cleaning with organic solvents

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