Ues their superficial roughness, which hampered a homogenous cleaning, and decrease
Ues their superficial roughness, which hampered a homogenous cleaning, and decrease values measured on samples AA and (preparation layer only and and ochre with yellow stripes). measured on samples and F F (preparation layer only ochre with yellow stripes). Nonetheless, thinking of the complexity with the ready samples,samples, the colorimetric Nonetheless, contemplating the complexity on the ready the colorimetric alterations measured have been deemed acceptable plus the all round cleaningcleaning outcomes had been considchanges measured had been deemed acceptable and the all round benefits were viewed as satisfactory. Additionally, RTI analysis analysis detect any considerable morphological transform ered satisfactory. In addition, RTI did not AS-0141 In Vivo didn’t detect any substantial morphological 18 of 2 Coatings 2021, 11, x FOR PEER Critique around the surface just after the combinedcombined application of PU sponges or the revolutionary adjust on the surface immediately after the application of PU sponges or the revolutionary hydrogels (Figure 13),(Figure 13), confirming the safeness with the used cleaning procedure. hydrogels confirming the safeness on the made use of cleaning procedure.Figure 13. RTI documentation prior to (a) and (b) cleaning tests. Figure 13. RTI documentation before (a) and right after immediately after (b) cleaning tests.3.3. Cleaning Treatment in the Egyptian StatuetteA PF-06873600 In Vivo cautious evaluation from the pictorial surface revealed difficulties of stability for the complete A careful analysis of a loss within the surface at several stratigraphic levels for the stratigraphy, which showed the pictorial adhesionrevealed problems of stabilityoften entir stratigraphy, partial showed a loss in the adhesion at numerous stratigraphic levels frequently combined with which detachments from the material in the underlying interface. Additionally, combined with cohesion of the Egyptian Blue layer belonging towards the initially pictorial level, resulting from the loss of partial detachments of the material at the underlying interface. Furthermore due to the loss of cohesion on the Egyptian layer, with belonging for the 1st pictorial level the sculpture showed numerous cracks within this Blue layer a consequent embrittlement of the whole stratigraphy. Therefore, it was within this layer, having a consequent embrittlement o the sculpture showed numerous cracks decided to consolidate the pictorial layers before3.3. Cleaning Treatment with the Egyptian Statuettethe complete stratigraphy. Consequently, it was decided to consolidate the pictorial layers befor the cleaning therapy, by injecting locally, only exactly where needed, a resolution of hydroxy propyl cellulose (Klucel G CTS Europe Milan, Italy, 2 in ethanol), which was deemed compatible with all the original materials.Coatings 2021, 11,18 ofthe cleaning therapy, by injecting locally, only where needed, a solution of hydroxyl propyl cellulose (Klucel G, CTS Europe, Milan, Italy, 2 in ethanol), which was deemed compatible with the original supplies. Following that, according to the outcomes obtained on mockups, we chosen the ideal procedure for the superficial cleaning in the Egyptian statuette. The measure of pH (six.62) and conductivity (three /cm) recommended not to consider essential to use a buffer resolution, so as to avoid any want of rinsing the surface using a subsequent application of water-loaded gels to take away buffer residues. The tests carried out on mockups had been fundamental for the cleaning from the artefact. Nevertheless, as expected, some adjustments have been performed during cleaning operations, particularly exactly where a thicker layer of dirt was present.