G GQ22 Senior Member Location Jersey City Rating - 100% 29 0 0 Nov 28, 2011 #1 Does anyone know if old probes go bad or they simply need to be recalibrated . I found a couple of old coraline covered ones from my reactor and ozone machne. Would prefer to not have to buy new ones. Thx
Does anyone know if old probes go bad or they simply need to be recalibrated . I found a couple of old coraline covered ones from my reactor and ozone machne. Would prefer to not have to buy new ones. Thx
KathyC Moderator Location Barnum Island Rating - 100% 200 0 0 Nov 28, 2011 #2 http://www.omega.com/techref/ph-3.html ...down near the bottom in the middle of the last paragraph
KathyC Moderator Location Barnum Island Rating - 100% 200 0 0 Nov 28, 2011 #3 ..and from Hanna http://www.hannainst.com/usa/whitepaper/CareandstorageofpHelectroderev4.pdf
