Page - 268 - in The Vienna Genesis - Material analysis and conservation of a Late Antique illuminated manuscript on purple parchment

268 Conservation of the Vienna Genesis and the new storage system water, as the adhesives tend to mix better. The adhesives and their activation are listed in Table 3. The tissues were activated and applied on Whatman paper, sheep and lamb parchment. On the lamb parchment, the tissues were applied to both the flesh and hair side. A selection of the listed adhesives was applied on Whatman paper No. 1 and parch- ment by brushing and in the form of remoistenable tissue (Table 4). These samples were artificially aged for 10 days at 80 °C, 65 % RH in a climate chamber37 VCC3 4034 (Vötsch Industrietechnik), which was controlled by the software SIMPAT 4.0. The samples were evaluated visually and mechanically by peeling the tissue off its support. Optical features, handling and solvent mixtures were compared. Table 4: List of artificially aged adhesives and remoistenable tissues Adhesive Concentration Reactivation Klucel G (in ethanol) 2.5 % w/v Ethanol 5 % w/v Ethanol Gelatine Photogelatine Gelita 2.5 % w/v Ethanol-water 1:1 v/v 5 % w/v Ethanol-water 1:1 v/v Gelatine-Klucel G (in water), 1:1 v/v 2.5 % w/v Ethanol-water 1:1 v/v 5 % w/v Ethanol-water 1:1 v/v Isinglass 2.5 % w/v Ethanol-water 1:1 v/v 5 % w/v Ethanol-water 1:1 v/v Isinglass-Klucel G (in water), 1:1 v/v 2.5 % w/v Ethanol-water 1:1 v/v 5 % w/v Ethanol-water 1:1 v/v Parchment glue 2.5 % w/v Ethanol-water 1:1 v/v 37 The climate chamber was provided by the Institute of Art and Technology, University of Applied Arts Vienna. Fig. 27: Reactivation system by Eliza Jacobi and the tools and ma- terials used for mending the fragile areas on the Vienna Genesis. Open-Access-Publikation im Sinne der CC-Lizenz BY 4.0