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Boomer · 02-17-2008, 02:06 AM

Is it true that pH probes should be replaced once a year?

Should be doesn't mean needs to be. It is pretty much a std for labs to do it once a year. If the probe can be calibrated and does not drift to much or is not to unstable it is usually fine. Many go two years before changing. I had one that was good for years, as in 10 years. You can still calibrate it, 15 years later but it is very unstable, so about useless. Allot depends on usage, care and maintenance.

02-17-2008, 02:06 AM	#7 (permalink)
Boomer Reef Sanctuary's Mr. Wizard Join Date: Nov 2003 Location: Duluth, Minnesota Posts: 2,608 View Gallery Karma Komment	Re: Testing ORP probes with Iodine Is it true that pH probes should be replaced once a year? Should be doesn't mean needs to be. It is pretty much a std for labs to do it once a year. If the probe can be calibrated and does not drift to much or is not to unstable it is usually fine. Many go two years before changing. I had one that was good for years, as in 10 years. You can still calibrate it, 15 years later but it is very unstable, so about useless. Allot depends on usage, care and maintenance. __________________ Boomer Want to Talk Chemistry ! The Reef Chemistry Forum Want to See More ! The Coral Realm If you See Me Running You Better Catch-Up An explosion can be defined as a loud noise, accompanied by the sudden going away of things, from a place where they use to be.