Steven Avery "you conjecture that the CFA had an aggressive reagent". Which only goes to show that you didn't read carefully, and only saw what you wanted to see. I never said that the CFA was subjected to 'aggressive reagents'. BTW peroxide and ammonia vapour in low concentrations are not aggressive reagents. The aggressive reagents were used by the likes of Mai, who destroyed manuscripts in the process.
The 1820 - 1850 was the heyday for applying chemicals to manuscripts, and their use was significantly curtailed after that once the extent of the long term damage became evident. It is not unreasonable to wonder whether at least some mild reagents were employed during the 1840s (both were available, and both still in use in the 20th century) to brighten, reduce foxing, stabilize ink and kill mould and mildew etc.
This is from our conversations on Academia.edu.
Have to check what spurred it from the articles.
In fact, Kevin goes into a huge theoretical conjecturing about how Leipzig pages became whiter, involving specific aggressive reagents, which we will study more carefully below, post #3. This is quite amazing.