Properties and use of gelatine, isinglass, ZorbixSM and alum-tawed caecum, as well as an update on the Apocalypto Project.
The NRO conservators’ preference for gelatine and isinglass for parchment treatment is based on:
- The principle of ‘like for like’, i.e. the compatibility between materials of similar proteinaceous nature
- Stability over time as demonstrated by historical evidence and specialist research
- Control over the mobility of the adhesives
- The adhesives’ availability
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