Thermo Scientific™ Orion™ 8103BN ROSS™ Combination Semi-micro pH Electrode Available on GSA/VA Contract for Federal Government customers only.

Receive stable readings to 0.01 pH in less than 30 seconds with the Thermo Scientific™ Orion™ 8103BN ROSS™ Combination Semi-micro pH Electrode.

Manufacturer: Thermo Scientific™ 8103BN

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Catalog No. 13-641-731

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Limited warranty period: Subject to all warranty requirements and exclusions set out in our Terms and Conditions of Sale, this product is warranted from the date we ship the product and for ninety (90) days thereafter. 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.


    Drift <0.002pH/day
    Description Semi micro tip
    Connector Types BNC
    Diameter (Metric) Cap 16mm
    pH Range 0 to 14
    Internal Reference ROSS
    Length (English) 6.5 in.
    Temperature (English) Operating 32° to 212°F
    Precision 0.01
    Storage Requirements To ensure a quick response and free flowing junction, the sensing bulb and reference junction must not dry out. Short-term Storage (up to one week): Soak the electrode in ROSS' pH electrode storage solution, Cat. No. 810001. 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.
    Temperature (Metric) Operating 0° to 100°C
    Material Glass body
    Junction Ceramic
    Filling Solution Type 3M KCl
    Length (Metric) 165mm

    Receive stable readings to 0.01 pH in less than 30 seconds with the Thermo Scientific™ Orion™ 8103BN ROSS™ Combination Semi-micro pH Electrode. Results are three to five times more precise than those obtained with conventional electrodes.


    • Works in extreme case of samples varying from one another by 50°C or more
    • Drift is less than 0.002 pH per day, restandardization is minimized
    • Fits test tubes, measures samples as small as 0.2mL
    • Semi micro tip
    • Cap diameter: 16mm


    • One 60mL botlle of filling solution, Orion Cat. No. 810007

    Recommended for:

    • Clinical, pharmaceutical, and food labs, wherever sample size is a constraint

  • Description & Specifications

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