Testing ORP probes with Iodine

Help Support Reef Frontiers:

Boomer

RF Staff
Joined
Dec 15, 2004
Messages
2,774
Location
Duluth, Minnesota
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.
 
Last edited:

Tone

Active member
Joined
Jan 22, 2006
Messages
31
Location
Brisbane, Australia
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, if I didn't want to make up 473ml of the solution ... say 50ml ... what proportions should I mix?

Cheers,

Tone :D
 

dnjan

alveopora
Joined
Sep 9, 2003
Messages
1,583
Location
Seattle
Does that solution have any shelf life? Or is it best to get rid of it within a few days?
 

Boomer

RF Staff
Joined
Dec 15, 2004
Messages
2,774
Location
Duluth, Minnesota
Well, 2 fld oz = 59.14705913 mL Iodine Tincture

59.1471 mL / 473 mL = 0.125047 mL Iodine Tincture / mL of water

50mL x 0.125047mL = 6.252 mL Iodine Tincture / 50 mL water

I would make up a new bach each time I use it.
 

skylersdad

Member
Joined
Jan 19, 2009
Messages
8
Location
gig harbor, wa
ORP, conductivity, disolved oxygen

hi, should i monitor ORP (what is that), conductivity, disolved oxygen for a 120gal reef tank? the answer will tell me if i should spend 299 or 499 on a neptune controller
 

Boomer

RF Staff
Joined
Dec 15, 2004
Messages
2,774
Location
Duluth, Minnesota
You do not need to monitor ORP unless you are using Ozone. However, if you did use one without Ozone it would teach you a few thing on ORP and why and how it shifts the ORP when you do things. ORP = Oxygen Reduction Potential.

ORP and the Reef Aquarium
http://reefkeeping.com/issues/2003-12/rhf/feature/index.htm




conductivity = The salinity of the tank. A value of 53 mS = 35 ppt = 1.0264

Using Conductivity to Measure Salinity
http://www.aquariumfish.com/aquariumfish/detail.aspx?aid=1804


dissolved oxygen= Not needed but if one has money to spend it is a nice toy.

The Need to Breathe, Part 3: Real Tanks and Real Importance (oxygen issues)
http://reefkeeping.com/issues/2005-08/eb/index.php
 
Your email address will not be publicly visible. We will only use it to contact you to confirm your post.

Latest posts

Top