Results 1 to 18 of 18

Thread: ORP Calibration

  1. #1
    Regular Vistor
    Join Date
    Jun 2017
    Location
    Sulphur, LA
    Posts
    15

    ORP Calibration

    Does the ORP need to be calibrated? The reason I ask is I saw BRS has a ORB calibration solution.

  2. #2
    Master Control Freak RussM's Avatar
    Join Date
    Dec 2012
    Location
    California - US Pacific
    Posts
    22,463
    ORP probe generally need no calibration. You are looking more at trends than absolute values.

    Is it the Pinpoint 400mV ORP buffer you saw on BRS' site? That cannot be used to calibrate a Neptune ORP probe.
    Please do not send me PMs with technical questions or requesting assistance - use the forums for Apex help. PM me ONLY if the matter is of a private or personal nature. Thanks.

  3. #3
    Regular Vistor
    Join Date
    Jun 2017
    Location
    Sulphur, LA
    Posts
    15
    It is Pinpoint.

  4. #4
    Frequent Contributor zombie's Avatar
    Join Date
    Dec 2013
    Location
    Denver, CO
    Posts
    13,176
    That won't work to calibrate it. You need quinhydrone and pH 4.0 and pH 7.0 to calibrate the orp probe on the apex. Unless you are using an ozone reactor you don't need to bother with calibration, but if you want to get a rough ballpark on what the value on the apex is compared to actual ORP you can use the pinpoint packets as a quick sanity check.

    You might be an engineer if...You have no life and can prove it mathematically.

  5. #5
    Frequent Visitor
    Join Date
    Mar 2017
    Location
    US, Central
    Posts
    355
    This is the kit I used to calibrate mine:
    https://www.sensorex.com/product/b12...libration-kit/

    As stated above, I don't technically "need" to calibrate it, but I would rather look a numbers that reference a standard instead of just relative to factory tolerance. I perform the calibration twice a year and I do it at the same time I calibrate my pH (pH done bi-monthly). I do not use either to control anything.

  6. #6
    NSI Member shiftline's Avatar
    Join Date
    Dec 2015
    Location
    Canada
    Posts
    158
    Assuming one tried to calibrate their ORP probe way back when using the 400 solution. Is there any way to reset it back to factory calibration or Sol without buying the quin solution?

    Not sure if it's legit. But I read a thread on R2R where someone suggested using 1part bleach to 5part RO


    Sent from my iPad using Tapatalk

  7. #7
    Master Control Freak RussM's Avatar
    Join Date
    Dec 2012
    Location
    California - US Pacific
    Posts
    22,463
    That bleach/water thing has been around for years. Randy Holmes-Farley advised against using bleach/water. http://www.reefcentral.com/forums/sh...82&postcount=6

    You can reset the ORP port to default calibration values by simply running through the calibration process quickly - don't let the values settle. You can just leave the probe in the tank while doing this. The Apex will sense the invalid results and restore the defaults.
    Please do not send me PMs with technical questions or requesting assistance - use the forums for Apex help. PM me ONLY if the matter is of a private or personal nature. Thanks.

  8. #8
    NSI Member shiftline's Avatar
    Join Date
    Dec 2015
    Location
    Canada
    Posts
    158
    Perfect. Thanks Russ !


    Sent from my iPhone using Tapatalk

  9. #9
    NSI Member shiftline's Avatar
    Join Date
    Dec 2015
    Location
    Canada
    Posts
    158
    So I'm assuming there is supposed to be a second bulb around the metal probe. Did my ORP bulb somehow discentegrate or is that probe supposed to extrude ..



    Sent from my iPhone using Tapatalk

  10. #10
    Frequent Contributor iamchadster's Avatar
    Join Date
    Aug 2013
    Location
    Wilsonville, Oregon
    Posts
    2,639


    I would say it doesn't look good. This was the best enormous image I could find showing that end clearly.
    Chad

  11. #11
    NSI Member shiftline's Avatar
    Join Date
    Dec 2015
    Location
    Canada
    Posts
    158
    Thanks for that! Looks like I'm missing the bulb. I wonder what the heck happened


    Sent from my iPhone using Tapatalk

  12. #12
    Frequent Visitor
    Join Date
    Mar 2017
    Location
    US, Central
    Posts
    355
    Quote Originally Posted by shiftline View Post
    Thanks for that! Looks like I'm missing the bulb. I wonder what the heck happened


    Sent from my iPhone using Tapatalk
    I saw your post with the morning hassle with the kids, I forgot to look at mine again....but that does not look correct. I'm like 99% certain mine does not have the probe actually exposed. I believe that outer bulb is needed to isolate the tank water from the reference solution. I don't honestly know how these things are built/work but I remember reading up on the differences between a single junction and double junction.

  13. #13
    Master Control Freak RussM's Avatar
    Join Date
    Dec 2012
    Location
    California - US Pacific
    Posts
    22,463
    It got damaged somehow. Has it been in service for a while, or is it new? Either way, you should get a new one.
    Please do not send me PMs with technical questions or requesting assistance - use the forums for Apex help. PM me ONLY if the matter is of a private or personal nature. Thanks.

  14. #14
    NSI Member shiftline's Avatar
    Join Date
    Dec 2015
    Location
    Canada
    Posts
    158
    It's a couple years old (original one). Still strange to see it deteriorates. The bulb below it looks fine... yep sadly looks like I need a new one!


    Sent from my iPhone using Tapatalk

  15. #15
    Frequent Contributor zombie's Avatar
    Join Date
    Dec 2013
    Location
    Denver, CO
    Posts
    13,176
    Quote Originally Posted by shiftline View Post
    It's a couple years old (original one). Still strange to see it deteriorates. The bulb below it looks fine... yep sadly looks like I need a new one!


    Sent from my iPhone using Tapatalk
    They shouldn't deteriorate. The bulb is made of glass which is not corroded by saltwater. More than likely something hit the glass at some point and broke the bulb.

    You might be an engineer if...You have no life and can prove it mathematically.

  16. #16
    NSI Member shiftline's Avatar
    Join Date
    Dec 2015
    Location
    Canada
    Posts
    158
    So I just spent a small fortune on a lab grade double Junction probe and I'm still getting basically the same reading



    Sent from my iPhone using Tapatalk

  17. #17
    NSI Member shiftline's Avatar
    Join Date
    Dec 2015
    Location
    Canada
    Posts
    158




    Sent from my iPhone using Tapatalk

  18. #18
    Frequent Visitor bescher's Avatar
    Join Date
    Dec 2014
    Location
    Nashotah WI
    Posts
    204
    Quote Originally Posted by shiftline View Post




    Sent from my iPhone using Tapatalk
    Not be mean but I'm happy to see someone else with a lower than 300 reading besides me. Every post I've seen except for this either talks about or shows their ORP at higher than ( much higher) 300
    i became frustrated and bought a double junction one.
    tiday it was at 374 atfter I fed the anemones and starfish and dropped some small pieces of shrimp in it dropped to 280
    so now I know what it means by the orp will drop if something dies

Similar Threads

  1. Question: ORP probe calibration
    By h20poloman in forum AquaBus Modules, Probes, and Breakout Boxes
    Replies: 1
    Last Post: 07-17-2021, 11:14
  2. ORP Calibration. Why Quinhydrone
    By Bryan in forum AquaBus Modules, Probes, and Breakout Boxes
    Replies: 2
    Last Post: 03-25-2015, 21:59
  3. ORP Calibration
    By marinereef in forum AquaBus Modules, Probes, and Breakout Boxes
    Replies: 9
    Last Post: 03-25-2015, 19:43
  4. ORP Calibration
    By batman3n1 in forum AquaBus Modules, Probes, and Breakout Boxes
    Replies: 2
    Last Post: 10-20-2013, 08:44
  5. Help! ORP Probe calibration
    By reefs2go in forum AquaBus Modules, Probes, and Breakout Boxes
    Replies: 2
    Last Post: 04-19-2013, 13:46

Tags for this Thread

Bookmarks

Bookmarks

Posting Permissions

  • You may not post new threads
  • You may not post replies
  • You may not post attachments
  • You may not edit your posts
  •