Term for 'pH-tolerant'?

[Michael G. Kurilla]

90taobri at wave.scar.utoronto.ca  writes:
>     I have a "dumb" question here.  While looking up journal references
> in the local library database, I realized there's a property I don't
> know how to describe in one word.  The subject is on methods of mutating
> proteins and enzymes to make them more heat- and pH-tolerant.  The
> "heat" part was easy:  "thermostability".  Is there a corresponding word
> related to pH?  A search of "pH stability" didn't yield many matches I
> could use.  Similary, "acidophilic" and "acidophile" didn't produce good
> results either.  Any suggestions?

A one word term is tough.  The term I would use is
pH-sensitivity.