BioTrode

Part # 238140

Choose the Gel-Glass pH Sensor for reliable, maintenance-free pH measurements using a durable glass shaft and pre-filled gel electrolyte. A sealed reference system means long-term stability, fast response time, and accurate results in lab applications.

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Minimum: 1, Maximum: 1000

BioTrode Details

The BioTrode pH Sensor is specifically designed for precise pH measurements in small-volume applications, such as microplates. Its compact 3 mm diameter facilitates accurate readings in limited sample sizes, with a 7 mm immersion depth. The pH probe features a spherical glass membrane and a ceramic diaphragm, ensuring reliable performance with low risk of contamination or corrosion. 

The BioTrode pH electrode is equipped with a Hamilton Everef reference system to support consistently stable measurements. This pH sensor connects via an S7 connector head and utilizes Protelyte electrolyte to prevent diaphragm clogging and support optimal functionality.

Accurately measure pH in microplate wells and other ultra-small sample vessels.

Resistant to many chemicals and contamination sources.

Achieve fast pH results and enjoy long-term stability.

Compact pH Sensor for Small Volumes

  • 3 mm shaft with 60 mm a-length.
  • 7 mm immersion depth.

Steadfast pH Measurement Performance

  • Quick responses, even in low conductivity media and protein solutions.
  • Protelyte electrolyte solution prevents clogging in the ceramic diaphragm.
  • Everef reference system ensures consistent readings.

  • Hamilton pH sensors are characterized by their high measuring accuracy and long service life.

    Hamilton pH sensors are characterized by their high measuring accuracy and long service life. This contributes significantly to the control of our processes. They also help us to guarantee the required product quality and to further optimize processes.

    Felix Colin
    Bioprocess Engineer, AB Enzymes GmbH

  • The measurement technology from Hamilton is hard to beat in terms of its measurement accuracy and reliability.

    The measurement technology from Hamilton that is used in our brewery is hard to beat in terms of its measurement accuracy and reliability. The planning security and cost stability with the subscription is very attractive and important to us. Hamilton offers great support and is always open to customer requests.

    Holger Bruckes
    Deputy head of Quality Assurance Mönchengladbach Brewery, Branch of OETTINGER Brewery GmbH

  • I could not be more pleased with my experience with Hamilton!

    My company has been using Hamilton probes for years and have always been happy with their performance! The team is always very helpful in trouble shooting issues and answering any questions that we may have about our probes. Overall, I could not be more pleased with my experience with Hamilton!

    Abigail Mann
    Bioprocessing Fermentation Associate at Heliae Development

BioTrode Specifications

Print
Sensor Family BioTrode
Wetted Parts GΙass
Ceramic
pH Glass Hamilton Type HF Glass
Electrical Connector S7
a-length 60 mm
Parameter pH
Measuring Range pH 0 to 14
Electrolyte Protelyte
Sensitivity 57 to 59 mV / pH at 25 °C
Zero Point 0 ± 20 mV
pH Glass Resistance Moderate
Membrane Shape Spherical
Diaphragm Ceramic
Number of Diaphragms 1
Reference System Hamilton Everef
Temperature Sensor No
Minimum Immersion Depth 7 mm
Serial Number Yes
Recommended Storage Hamilton Storage Solution or 3 M KCl
Certificate Yes, with measured values in Buffer pH 4.01 and pH 7.00
Diameter 12 mm
Operating Temperature Range 0 to 100 °C
Pressure Range bar g Atmospheric pressure
Shaft Diameter Below 3 mm

BioTrode Resources

Browse app notes, user guides, specification documents, and more in our Knowledge Center.

Browse app notes, user guides, specification documents, and more in our Knowledge Center.

Hamilton pH and ORP electrode operating instructions cover sheet with electrodes and pH 21 buffer solution bottle

Technical Manual

Operating Instructions - Laboratory Electrodes

Download the operating instructions for the laboratory pH and OPR electrodes.
Hamilton Laboratory Electrodes catalog cover showing pH and ORP electrode tubes, a pH 4.01 buffer solution bottle, and ORP/pH labels.

Catalog

Catalog - Laboratory Electrodes

Discover Hamilton's laboratory electrodes, their benefits, and specifications.
Hamilton Process Analytics catalog cover showing sensors labeled ORP, CO₂, GLC, TCD, VCD, DO, Cond, and pH

Catalog

Catalog - Process Analytics

Download the Process Analytics sensor catalog to learn about the complete offering of Hamilton process sensors and accessories.

Browse app notes, user guides, specification documents, and more in our Knowledge Center.

pH Calibration Procedure

Article

The pH Sensor Calibration Procedure

This article provides guidelines for calibrating a pH sensor or an industrial transmitter. The article provides best practices for handling sensors and liquid buffer solutions.
Green circle icon with a dark navy lightbulb containing two interlocking gears, on a teal dotted background.

Article

pH and ORP Sensor Cleaning

Answers to common questions on how to clean off build-up and coating on pH sensors and ORP sensors.
Green circle icon with a dark navy lightbulb containing two interlocking gears, on a teal dotted background.

Article

Glossary of Sensor & Biopharma Acronyms & Abbreviations

Acronyms and abbreviations are commonly used with process analytics measurements found in the biopharma industry. This glossary is an attempt to de-code some of the more frequently used acronyms.

Browse app notes, user guides, specification documents, and more in our Knowledge Center.

FAQ

What are the best practices for using laboratory electrodes?

Click on the header for some simply advice on calibration and measurement with laboratory electrodes.
Services
Modular Service Contracts

Hamilton offers modular service contracts tailored to your requirements, featuring a basic module complemented by optional add-ons.

Installation Support

Installation, set-up, and calibration support directly on-site. Our field service team ensures your sensors and cables are installed and functioning correctly.

Qualification IQ/OQ

Support for the qualification of Hamilton equipment including complete documentation. Readying your process for GMP manufacturing activities.

Maintenance and Calibration Services

Preventative maintenance and regular service contracts. Schedule on-site service dates to ensure your sensors are properly maintained and your process is optimized.

On-Site Service Diagnostics

Diagnosing and resolution of process system problems on-site. Finding the root cause and presenting a solution to fit your needs.

On-Site Training

User trainings and on-site trainings for technicians. Tailored training ranging from basic operation to advanced calibration and maintenance.

Backed by world-class service and support.

For over 75 years, the Hamilton name has been recognized globally for its unwavering commitment to quality. That pledge extends to creating long-term customer partnerships. We're proud to offer in-depth training courses, on-site field support, custom product builds, and so much more.

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