Testing ORP probes with Iodine

Boomer · 02-16-2008, 02:19 AM

Something I picked up on from ENC.

Pick up a std 2 ounce bottle of Tincture of Iodine (USP Grade) and dilute it with 473 mL of RO/DI water. After thoroughly mixed, place enough in a small container to check the probe. It should read between +440 and +455 mV. If it does not you have a probe issue, either dirty or it needs to be replaced.

Woodstock · 02-16-2008, 08:02 AM

Thanks for the info!

How long do ORP probes normally last?

Boomer · 02-16-2008, 11:54 AM

Couple of years Woody.

Dentoid · 02-16-2008, 12:08 PM

That's great to know.

Off topic, but related. Is it true that pH probes should be replaced once a year?

DrHank · 02-16-2008, 01:24 PM

Thanks Boomer!

boozeman · 02-16-2008, 03:24 PM

thanks Boomer

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.

Dentoid · 02-17-2008, 08:55 PM

Thanks Boomer! Of course I got the information from the instructions that came with my PinPoint Ph monitor.

Boomer · 02-18-2008, 12:16 PM

Your pH monitor came with instructions for ORP ?

02-16-2008, 02:19 AM	#1 (permalink)
Boomer Reef Sanctuary's Mr. Wizard Join Date: Nov 2003 Location: Duluth, Minnesota Posts: 2,608 View Gallery Karma Komment	Testing ORP probes with Iodine Something I picked up on from ENC. Pick up a std 2 ounce bottle of Tincture of Iodine (USP Grade) and dilute it with 473 mL of RO/DI water. After thoroughly mixed, place enough in a small container to check the probe. It should read between +440 and +455 mV. If it does not you have a probe issue, either dirty or it needs to be replaced. __________________ 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.

02-16-2008, 08:02 AM	#2 (permalink)
Woodstock The Wand Geek was here. ;) Join Date: Nov 2003 Location: North Carolina Posts: 25,502 View Gallery Karma Komment Add yours!	Re: Testing ORP probes with Iodine Thanks for the info! How long do ORP probes normally last? __________________ ~Doni Marie~ *GOT ICH???* *My Victorious Battle with ICH* 120 Reef Chronicle ~ *Breeding Picasso Clownfish~* *Massive 300 gal growout~* *My Anemone & Picasso Tank ~* *Picasso & Snowcasso for sale~* "Energy and persistance conquer all things." Benjamin Franklin __________________________________________________ ______________________________________________

02-16-2008, 11:54 AM	#3 (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 Couple of years Woody. __________________ 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.

02-16-2008, 01:24 PM	#5 (permalink)
DrHank Golden Moray Join Date: Apr 2007 Location: Crestview, FL Posts: 2,758 View Gallery Karma Komment	Re: Testing ORP probes with Iodine Thanks Boomer! __________________ Doc Dr Hank's 210 Build: http://www.reefsanctuary.com/forums/...nks-tanks.html

02-16-2008, 03:24 PM	#6 (permalink)
boozeman The CodFather ~ Join Date: Apr 2006 Location: new york Posts: 8,802 View Gallery Karma Komment Add yours!	Re: Testing ORP probes with Iodine thanks Boomer __________________ ...and when I'm old and wise little things mean little to me like autumn winds they'll blow right through me and someday, in the mist of time when they ask you if you knew me remember that you were a friend of mine Last edited by boozeman : 06-17-2008 at 05:40 AM.

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.

02-18-2008, 12:16 PM	#9 (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 Your pH monitor came with instructions for ORP ? __________________ 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.

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