BRS Double Junction Lab Grade ORP Probe

BRS Lab Grade ORP Probe
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  • BRS Lab Grade ORP Probe

BRS Double Junction Lab Grade ORP Probe

71% Recommend this to a friend (5 of 7)

SKU: 207820

reg. $69.99

Special Price: $59.49

In Stock: 2
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Quick Overview

Why does BRS recommend this?

When it comes to probes not all are built alike. We went through many different brands of probes to bring one in that we were comfortable putting our name on. With high quality materials, the BRS Lab Grade ORP probes will last longer than most other standard grade probes while giving more consistent readings in between calibrations.

High quality, American-made ORP probe to meet your saltwater aquarium needs.

  • Made in the US under strict quality control

  • High grade platinum rod

  • Double junction designed specifically for contact with proteins or heavy metals

  • BNC connector with superior insulators

  • Cable has low noise design with conductive copper layer between braid and center conductor

  • Less frequent and quicker calibration

  • 10 Ft cord


*Calibration solutions sold separately


Full Details

BRS Lab Grade ORP Probe Features:

Double Junction Probe: A double junction probe has a second seal and junction found at the center of the probe. The double junction design adds to the cost and complexity of the probe but they are recommended in instances where the probe will come in contact with proteins or heavy metals. When these elements come in contact with the silver within the probe gel they can precipitate on the porous junction and clog it which can cause drift and shorten the life of probe.


The double junction design used in this probe has a second junction in the center of the probe which creates two chambers within the probe. The first one is filled with the reference gel containing mostly potassium chloride, silver chloride and reference probe. The second chamber has just reference gel containing mostly potassium chloride. This design prevents precipitation by keeping the silver away from the second porous junction at the bottom of the probe which is exposed to the aquarium water.


The BRS Lab Grade probe uses pelon strips as a junction material which is a true electrochemical insulator which allows a complete circuit between the reference probe and the tank but allows a very minimal transfer of elements found within the probe or tank. The pelon strip is also much easier to re-wet than the ceramic junctions in the case of accidental drying out of the probe.


The BNC connector is also made to higher quality specifications with superior insulators between the shell and center pin to reduce noise and increase accuracy. The outer shell on the BRS Lab Grade Probe is made using epoxy rather than less expensive polycarbonate which is what most probes use because it is the most inexpensive material available. The epoxy shell is a highly resistant material and inert to a wide range of materials making this one of the more chemically compatible options available for probes like this.


*Calibration solutions sold separately


7 Items

  • Cheaper isn't always better... By Michael on 2/7/2017

    Probe was dead-on-arrival. I have never had a name brand pH or ORP probe fail.
  • Great probe Good price By VINCE on 8/17/2016

    This is probably the best value on a high quality ORP probe you will ever find.
  • Love it By Paul on 9/4/2015

    I love it, I have this running with my Apex, I love the build quality, I also love that it came with a reusable bottle. This is a really sturdy probe. I did not feel the need to calibrate it, since Neptune said not to, and BRS didnt require it. I love it
  • High Quality Probe By Joel on 9/4/2014

    Just attach it to your controller, calibrate, and away you go! Simple and so far no drift. The cord is long, giving you flexibility in mounting options. Don't forget a probe holder and calibration fluid.
  • Great Quality, Great Price By Griseum on 1/9/2014

    The build quality seems to be on par with any other (more expensive) ORP probe. Have not had any problems like unusual spikes or drops, Comes very well packaged and protected (especially the electrode). Calibrated easily with the 400mV solution available from BRS.
  • Good buy By Z on 10/23/2013

    Appears well made. Decent price. Running this on the Apex controller. Gave what appear to be normal readings within a day or so. Starting using Ozone with prior readings in the 230 range and now up above 300 within a week.
  • You get what you pay for! By Andy on 8/15/2013

    Excellent quality. Reading is very steady. Does not jump around at all like the other cheap probes I have used. Very accurate and craftsmanship is of high quality. I will come back for these when I need another replacement. High quality just like the expensive probes, but with a nice price tag!


Ask a question

Product Questions

Is this compatible with the Reef Keepers as well?
Question by: Alfred on Jan 17, 2016 2:18:00 AM
Great question!
The Probes should all use a standard BNC connector which is on the Reef Keeper. Feel free to let us know if you have any further questions!
Answer by: Connor (Admin) on Jan 26, 2016 5:53:00 PM
Is this probe compatible with the Neptune Apex?
Question by: Carl on Nov 23, 2013 5:04:00 AM
Hey Carl,
It sure is. Pretty much all the pH probes and ORP probes in the hobby are universal and interchangeable.
Answer by: Bulk Reef Supply on Nov 23, 2013 5:04:00 AM