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Thermo Scientific™ Orion™ ROSS Ultra™ Refillable pH/ATC Triode™ Combination Electrodes PROMO

When you purchase a Thermo Scientific™ ROSS™ pH Electrode, you’ll receive a ROSS Buffer Kit at no additional cost. Order using the catalog numbers below and your products will ship together.

$390.00 - $648.00


Filling Solution Type ROSS electrode 3 M KCl fill solution (Cat. No. 810007)
Internal Reference ROSS
Junction Glass Fiber
Material Epoxy Body
pH Range 0 to 14
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Catalog Number Mfr. No. Connector Types For Use With (Equipment) Price Quantity & Availability  
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Unique internal element system replaces Ag/AgCl or Hg2Cl2 internals with platinum wire and redox-couple filling solution. Double-junction reference cells have porous ceramic or glass fiber outer junction. Design provides stable potential, independent of temperature, and stable readings even when samples vary by 50°C (90°F) or more. Minimizes drift, stirring effects, clogged junctions; no need for frequent standardization so samples are analyzed faster.

  • Epoxy body for durability and ruggedness
  • Built-in ATC probe
  • General-purpose applications
  • Standard size and standard bulb
  • Glass fiber junction
  • L × Dia.: 120 × 12 mm


  • 0 to 14 pH
  • 0 to 100°C (32 to 212°F) range
  • Slope, 92 to 102%; isopotential point, pH 7
  • When standardized in 6.86 pH buffer at 25°C (77°F), accuracy is ±0.03 pH for the buffer from 0 to 100°C (32 to 212°F) (using ATC); response is stable to 0.01 pH within 30 seconds at 25°C (77°F) and 75°C (167°F) and stable to ±0.002 pH within 15 seconds when cycling between pH 6.86 and 4.01 buffers at 25°C (77°F)
  • Max. cap dia. (top): 0.75 in. (19 mm); collar dia. 0.62 in. (16 mm); Cable length is 39.37 in. (1 m)


ROSS electrode 3 M KCl fill solution (Cat. No. 810007)
Glass Fiber
0 to 14
Epoxy Body
Product Certifications
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