Thermo Scientific™ Orion™ ROSS Ultra™ Refillable pH/ATC Triode™ Combination Electrodes for Orion Series Meters

Measure biological media, pharmaceuticals, foods and more with Thermo Scientific™ Orion™ ROSS Ultra™ Refillable pH/ATC Triode™ Combination Electrodes.

Brand: Thermo Scientific™

Manufacturer Part Number: 8157BNUMD

UNSPSC: 41115604

Code: 04

Additional Details:
Additional Details: Weight: 0.20000kg

Product Code. 10206993

Quantity Price
1 £ 392.0 / Each
In Stock 3
Add to basket

Description and Specification


Description Orion ROSS Ultra Refillable pH/ATC Triode Combination Electrodes with a BNC and 8-pin MiniDIN Connector and 1 meter cable
Warranty 2 years
pH Range 0 to 14
Precision 0.01
pH Relative Accuracy 0.03pH for buffers using automatic temperature compensation
Temperature (Metric) Operating 0° to 100°C
Material Rugged epoxy body
Junction Glass fiber
Isopotential Point 7
Filling Solution Type ROSS electrode 3 M KCl fill solution (Cat. No. 810007)
Length (Metric) 120mm
Diameter (Metric) 12mm
Length (Metric) Cable 1m
Connector Types BNC Waterproof, 8-pin MiniDIN
For Use With Thermo Scientific Orion Versa Star, Star A, and Dual Star meters
Internal Reference ROSS

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 × 12mm


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