If you mean the anti-acidic treatment.
Yes seems to halt the rot, reduces the browning but
perhaps black print is less black and the wet process does ruin any
binding.
As confirmation I still do it now and again to different books

electronic hints and repair briefs , schematics/manuals list on
http://homepages.tcp.co.uk/~diverse

Nigel, Diverse Devices,Southampton, England


I just tried some universal indicator for the pH of this first treated
Brimar valve databook,3 years ago now, is still about pH 9.5 The paper feels
more supple ie less brittle than before treatment, no trace of continued
edge fraying.