Orion™ ROSS Ultra™ Refillable pH/ATC Triode™ Combination Electrodes

Measure pH and Temperature with One Electrode!

Measure biological media, pharmaceuticals, foods and more with Thermo Scientific™ Orion™ ROSS Ultra™ Refillable pH/ATC Triode™ Combination Electrodes. They are ideal for any application where the use of metallic reference electrodes would contaminate the samples. ROSS Ultra electrodes offer the best temperature performance in repeated, varying temperatures of all other electrodes. They have great stability and drift and come with a two-year replacement warranty. 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.

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

Applications:

• Quality Control
• Research 
• General Purpose

Important Product Update: Electrode Body Transition

The epoxy body design for the Orion™ ROSS Ultra™ Low Maintenance and Refillable pH/ATC Triode™ Combination Electrodes is transitioning from the current extruded design to a new moulded design.

• Transition Timeline: October 2026 – January 2027. As existing inventory cycles through the supply chain, you may receive electrodes with either the current extruded body or the new moulded body.
• Identical Performance: There are no changes to the electrode internals, performance specifications, cables, connectors, calibration behavior, or meter compatibility. The probe functions exactly as before.
• Lot Identification: All electrodes manufactured with the new moulded body will feature a lot code ending in "8."