Low Maintenance pH / ATC Combination Electrode compatible with TRIS buffers

Low Maintenance pH / ATC Combination Electrode

  • pH Range : 0 to 14
  • Material : Rugged epoxy body, filled with low maintenance gel
  • Connector Types : BNC Waterproof, 8-pin MiniDIN

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Increase the accuracy of your readings with a pH sensor that delivers superior performance at varying sample temperatures.

Our Thermo Scientific Orion ROSS Ultra Low Maintenance pH/ATC Triode combination electrodes combine the stability, precision, and speed of response of the ROSS Ultra line with integrated temperature measurement. Orion ROSS electrodes contain no Silver or Silver Chloride and incorporate a double-junction design, which protects the sample from contamination and makes the electrodes compatible with TRIS buffers.

Measure pH and Temperature with One Low-Maintenance Electrode

Low ionic strength samples, such as clean waters, present a challenge to pH electrode performance. Sluggish response, poor accuracy, and drift are common. The Thermo Scientific Orion ROSS Ultra 8107 Triode pH electrode responds within one minute, proving a stable, accurate reading.

Complete your pH measurements faster. Get a long, maintenance-free electrode lifetime with special long-life gel and innovative capillary glass junction design. Maintain sample integrity, even in TRIS buffers; ROSS double junction design electrodes contain no silver, which can bind with biological samples. With built-in temperature sensors, these electrodes offer a convenient solution for your routine sample measurements.

Compatible with Thermo Scientific Orion Versa Star, Thermo Scientific Orion Star A, and Thermo Scientific Orion Dual Star meters, as well as Mettler Toledo pH meters.

Target Markets

  • Pharmaceutical/Biopharmaceutical
  • Food Manufacturing
  • Academic/Government
  • Environmental


  • Quality Control
  • Research
  • General Purpose


18 months from the date of purchase by the buyer or 24 months from the date of shipment from the Seller, whichever is earlier.

All Thermo Orion electrodes are available on request.

pH Range0 to 14
pH Relative Accuracy0.03pH for buffers using automatic temperature compensation
Operating Temperature0° to 80°C
MaterialRugged epoxy body, filled with low maintenance gel
JunctionGlass capillary
Isopotential Point7
Filling Solution TypeNone required
Cable Length1m
Connector TypesBNC Waterproof, 8-pin MiniDIN
For Use WithThermo Scientific Orion Versa Star, Star A, and Dual Star meters
Internal ReferenceROSS
TypepH/ATC Combination Electrode
Warranty18 months