Sorry I lost the address of the individual who wanted some info on pH meters or paper. I have a package of pH strips that test from 7.0 neutral to 14.0 (max alkaline) send address by e-mail and I'll send them to you. Also if your patient, I'll be in a lab. in the next month or so and can get you some for the acid side.I don't believe pH strips are any more accurate (nor do I believe there is need) than .5 increments. I have a hand held pH meter somewhere in the house, a reasonably good one is going to cost in the $75.00 neighborhood range. It is also Temperature compensated which is important. If I can find it I might consider a swap such as lunch at Desire in New Orleans!! the next time I visit. Guess that's it must go. Peter