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Thermo Scientific™ Orion™ 8135BN ROSS™ Combination Flat Surface pH Electrode

Stable readings to 0.01 pH in less than 30 seconds.

Manufacturer:  Thermo Scientific™ ORI8135BN

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Catalog No. 13-641-807



Stable readings to 0.01 pH in less than 30 seconds. Get results three to five times more precise than those obtained with conventional electrodes with the Thermo Scientific™ Orion™ 8135BN ROSS™ Combination Flat Surface pH Electrode.


The 8135BN ROSS Combination Flat Surface pH Electrode measures pH of soft, moist surfaces—both solid and semi-solid—such as agar gel plates, meats, bread dough and similar samples. With drift less than 0.002 pH per day and minimized restandardization, this electrode works in extreme cases of samples varying from one another by 50°C or more.
  • Material: Epoxy body
  • pH range: 0 to 14
  • Temperature range: 0° to 100°C
  • Internal reference: ROSS
  • Junction: Glass fiber
  • Dimensions: 120 × 12mm
  • pH precision: 0.01
  • Fill solution: Orion 810007
  • Cap diameter: 16mm
  • Small samples are available in micro sample dish
  • Flat surface tip

Includes: One 60 ml bottle of ROSS fill Solution, 810007 and spout cap



With BNC connector
0 to 14
0° to 100°C
Glass Fiber
0.47 in.
32° to 212°F
Short-term Storage (up to one week): Soak the electrode in ROSS' pH electrode storage solution, Cat. No. 810001, or standard pH electrode storage solution, Cat. No. 910001. For enhanced electrode performance, use ROSS' pH electrode storage solution. Long-term Storage (more than one week): Fill the reference chamber and securely cover the fill hole. Cover the sensing bulb and reference junction with the protective cap, sleeve or storage bottle containing a few drops of storage solution. Before returning the electrode to use, prepare it as a new electrode.
Standard pH Meter, BNC connector
Epoxy body
3M KCl
39 in.
Combination Flat Surface pH Electrode, BNC connector

Disclaimer to internal research use restriction: Any restrictions on the purchaser to utilize the product(s) for internal research purposes only does not apply to the product(s) on the web pages associated with this statement.