Triode-electrodes-230x195

Measures pH and temperature with one electrode

All Orion Triodes have built-in temperature sensors, allowing you to measure pH and temperature with one electrode. We offer a variety of electrodes based on your sample and application.

  • Complex samples, such as biological media, foods, and pharmaceuticals, can be measured easily with Orion Triodes.
  • The AquaPro Triode has the advantage of having an open junction that does not clog, and a double junction reference; for use in samples with TRIS, protein, and sulfides.
  • Ag/AgCl Triodes have good response and are ideal for routine measurements.
  • Gel-filled ROSS Ultra Triode electrodes have an 18-month warranty.

Featured electrodes:

View all
  Top performance
with glass body
Low maintenance
with extended life
Refillable, convenient, and durable Maintains calibration for
1 year
 
  ROSS Ultra pH/ATC Triode with glass body ROSS Ultra pH/ATC Triode with epoxy body, low maintenance gel ROSS Ultra pH/ATC Triode with epoxy body Orion No-Cal pH/ATC Triode with epoxy body
 
  • ROSS Ultra pH/ATC Triode with epoxy body
  • Chemical resistant glass body
  • Low maintenance gel
  • Rugged epoxy body
  • General purpose, high performance
  • Rugged epoxy body
  • Designed for stability
  • Accurate to 0.1 pH w/o calibration
Product SKU number 8302BNUMD (star) 8107BNUMD (star)*
8107UWMMD (star)
8157BNUMD (star)*

5107BNMD

pH range 0–14 0–14 0–14 0–14
pH precision 0.01 0.01 0.02 0.01
Temp. range 0–100°C 0–100°C 0–100°C 0–100°C
Internal reference ROSS ROSS ROSS Platinum
Junction Ceramic Glass capillary Glass fiber Ceramic
Fill solution (SKU no.) 3 M KCl (810007) -- 3 M KCl (810007) --
Dimension D (Dia)
L (Length)
T (Tip)

L—120 mm
D—12 mm

L—120 mm
D—12 mm

L—120 mm
D—12 mm

L—120 mm
D—12 mm
Connector type BNC waterproof—mini-DIN (star)

BNC waterproof—mini-DIN (star)*

BNC waterproof—mini-DIN (star)* 3 m

BNC waterproof—mini-DIN (star)*

BNC waterproof—mini-DIN (star)* 3 m
BMC waterproof—mini-DIN
We have an of extensive inventory of Triode Electrodes also available ›
  Increase your productivity by adding accessories to your benchtop or portable meter. Meter Accessories ›

pH and ORP
benchtop meters

find the right benchtop meter for your pH and ORP measurement needs

The accuracy and reliability of your pH and ORP measurements depend on the instrumentation you use. Learn more about how you can identify the best match based on your required features, performance, specifications, and budget.

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pH and ORP
portable meters 

find the right portable meter for your pH and ORP measurement needs

Take your pH and ORP measurements to the field without sacrificing accuracy and reliability. Our portable meters are rugged and waterproof, and provide the dependable performance that your demanding applications require.

 

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Electrodes
and probes

view our selection of electrodes

The accuracy and reliability of your measurements depend on the instrumentation you use. Learn more about how you can identify the best match based on your required features, performance, specifications, and budget.
 

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Buffers
and solutions

view our buffer and solutions

We offer buffers, electrode storage solutions, electrode cleaning solutions, lab buffer kits, and electrode filling solutions for your measurement needs. Find the buffers and solutions that you need for your process.

 

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Resources
Support

Knowledge Base: Certificates of Analysis and SDS for Orion, ROSS, AQUAfast, AquaMate, and AquaSensors products.

Orion Meters Software and Upgrades
Thermo Scientific Orion benchtop and portable meters are designed to help deliver accurate, consistent results, day after day. Boost productivity by upgrading your software today.

Find your software