pH Probe Costs

re:  pH Probe Costs


>>I only found very expensive pH-probes though. Does anyone
>>know of a good one, and at what appr. price?

Hate to ask this, but how expensive is expensive?  I've found several starting
a $79.00 up to several hundred dollars.   Will the probe be run in line?  If so
I have found one with a flat electrode that is designed to stay clean for I
think $115.00.