[Daveolyte]

Subject says it all.  I'm having such a time trying to solve this problem...

I need to determine HF concentration in non-aqueous media.  I have a fluoride selective electrode and reference electrode for non-aq, but I can't find anything like TISAB for organic solutions.  ideally "pH" (I use this term loosely as we're not in water) should be around 5. 

Anyone?  Bueller?

Thanks for any ideas.

D