Global Journal of Human Social Science, C: Sociology and Culture, Volume 23 Issue 2

g) Ease of cleaning The colors of the rocks were compared before and after the placement of the poultice, with two cleaning phases (that have been already described in the methodology). In order to avoid the interference of the possible chromatic change produced by the consolidant, we only took into account the luminosity (L *). In this way, we have taken advantage on the fact that this value is the most significant parameter in the difference between the color of the substrate and the poultices. The results are shown in table 10. The pulp of paper without manipulation was slightly whiter than the poultices, and "GPM” ones were in turn whiter than the "handmade" ones. Even though, in the latter case, we checked that it depended on the surface roughness, because when an escape of liquid water had smoothed the surface of the “GPM” poultice, its values were identic to those of “handmade” poultices. From a physical point of view, when wet, “GPM” poultice was compacted with less pressure and in greater proportion than the “handmade” one. Once the poultices were dry, this phenomenon remained, and in addition, the “GPM” was disaggregated much more easily than the “handmade” one. In order to evaluate the adhesion of Arbocel® pulp (tablet 10) for cleaning purposes, the following values were subtracted: initial luminosity in each substrate (C1), the values after the detachment of the poultice (C2) and the values after brushing (C3). In C2-C1 substraction, the values that represent the best possible cleaning would be the values of zero, and the greater adhesion of the paper pulp would correspond to the positive values. Negative values are theoretically impossible. In C3-C1substraction the case is similar to the previous one. In C3-C2 substraction the best cleaning values would be the negative ones (the more negative, the cleaner it would be) and the greater adhesion of the paper would correspond to negative values close to zero. Positive values are theoretically impossible. In all cases regarding stone substrates, the results indicated that “GPM” poultice could be cleaned much better than the “handmade” one, whereas in wood the results were the opposite, this is, in the three cases the “handmade” poultice showed better results. © 2023 Global Journals Volume XXIII Issue II Version I 13 ( ) Global Journal of Human Social Science - Year 2023 C Poultices Generated Mechanically with Compressed Air: “Gunpoint Mix System” Characterization and Properties. Comparison with “Handmade” Poultices