For sale is a Pinpoint PH monitor. I have the calibration fluid to recalibrate the probe. Should work fine after that.
http://premiumaquatics.com/aquatic-supplies/PIN-PH.html
New goes for $90. I'm asking $50.
http://premiumaquatics.com/aquatic-supplies/PIN-PH.html
New goes for $90. I'm asking $50.