Hamilton pH Sensors

Wide range of high-quality Hamilton pH sensors.

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pH sensors

Precision pH measurement backed by expert support.

The wide range of Hamilton pH sensors deliver accurate and reliable measurements across bioprocessing, industrial, and laboratory processes. With a wide range of pH electrode designs, including pre-pressurized, refillable, and single-use options, Hamilton offers high-performing, low-maintenance pH measurement solutions tailored to the unique requirements of each application. Hamilton pH sensors are backed by our expert technical support, calibration services, and educational resources.

  • We particularly appreciated the professional and personable approach.

    The training on pH sensors was highly beneficial for us. After a detailed introduction to the fundamentals of pH measurement, electrode measurement principles, and the topic of troubleshooting/prevention, we had sufficient time to ask our specific questions. This enabled us to apply what we learned immediately and integrate it directly into our laboratory routine. We particularly appreciated the professional and personable approach of Mrs. Näf-Rüdiger, who guided us through the informative and application-oriented training session.

    Romy Alisch
    Scientist, Novozymes Berlin GmbH, Germany

  • 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

Benefits of Using Hamilton pH Sensors

  • Consistent pH Sensor Accuracy Over Time

    Consistent pH electrode readings ensure optimal process performance across applications and over time.

  • Use-specific pH Electrode Designs

    Choose a Hamilton pH sensor tailored to your bioprocessing, water treatment, or industrial processes.

  • Minimize Downtime and Service Frequency

    Low maintenance options like pre-pressurized and polymer-filled pH probes ensure smooth operation of your process.

View All pH Sensors

Select a ph sensor type to see product recommendations from Hamilton.

OneFerm pH Sensor Element

Single-Use pH Probes

Hamilton's OneFerm single-use pH sensors provide reliable, stable, and accurate measurements for biopharma applications, seamlessly integrating into SU bioreactors and systems with a clog-free design, bio-compatibility, and customizable options, maintaining performance even after gamma irradiation

Browse All Single-Use pH Measurement

Pre-Pressurized pH Probes

EasyFerm Bio
EasyFerm Bio pH sensors offer Foodlyte biocompatible electrolyte and EHEDG Certification for pH measurement in processes where non-toxicity is mandatory.
Easyferm Bio Preferred
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Pre-Pressurized pH Probes

EasyFerm Plus
Hamilton EasyFerm Plus pH sensors are the most popular product for pharmaceutical applications where autoclave and SIP are frequently performed. They provide accurate and stable pH measurement in demanding biopharma processes.
Easyferm Plus pH sensor
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Polymer-Filled pH Probes

Polilyte Plus
Polilyte Plus pH sensors are engineered for long life and high accuracy in demanding industrial applications. They feature a maintenance-free design with clog-resistant single pore junctions and a stable polymer electrolyte, ensuring reliable pH measurement in diverse conditions.
Polilyte plus pH sensors
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Polymer-filled pH Probes

Polilyte HT

Polilyte HT sensors are built for demanding applications in the chemical and industrial water sectors, offering reliable pH measurement in harsh conditions. With a clog-resistant, maintenance-free build and Memosens technology, they ensure stable, high-temp performance.
Hamilton Company

Refillable pH Probes

FermoTrode
The FermoTrode is a maintenance-free pH sensor designed for pharmaceutical and biotechnology industries, featuring a clog-free design and stable performance after steam sterilization.
Fermotrode pH sensor
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Viscous Liquid-Filled pH Probes

MecoTrode
Engineered for reliable pH measurement in harsh chemical processes with extreme pH values and even hydrofluoric acid (HF), MecoTrode sensors ensure stable readings and long service life in demanding industrial applications.
Mecotrode pH sensors
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Refillable pH Probes

ChemoTrode
The ChemoTrode is a robust sensor, designed for measuring pH in demanding applications in pharmaceutical and chemical industries.
pH Sensor Chemotrode
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Refillable pH Probes

IonoTrode
The IonoTrode is a refillable pH sensor designed for applications in ion weak media. The F glass membrane's low resistance makes it ideal for use in samples with low conductivity.
Sensor Ionotrode
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Polymer-Filled pH Probes

InchTrode
InchTrode sensors ensure fast and accurate pH measurement in demanding paper and chemical applications.
InchTrode N100F pH sensor
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Polymer-Filled pH Probe

Polyplast PRO

The maintenance free Polyplast Pro sensor is designed for pH measurements in water applications where sensor breakage is a concern.

Polymer-Filled pH Probes

Polilyte Pro

The maintenance-free Polilyte Pro sensors are designed for pH measurements in water applications, especially in low-conductivity samples, such as wastewater, fish farming, and groundwater.
pH Polilyte Pro S8

Laboratory pH Probes

Laboratory pH Sensors
Hamilton offers a broad selection of laboratory sensors designed for diverse applications, providing accurate, rapid, and reliable measurements. Our portfolio includes pH sensors catering to various research and quality control needs.
Laboratory pH sensors
Browse All Laboratory pH Sensors

Viscous Liquid-Filled pH

EasyControl

The EasyControl sensors are entry level pH sensors suitable for chemical or waste water applications, due to the sensor's performance at low temperatures and low conductivity.
pH EasyControl S8

Viscous Liquid-Filled pH

Liq-Glass PG

The Liq-Glass PG pH sensors are designed for challenging applications like wastewater, offering reliable measurements in low conductivity media. Their viscous electrolyte helps prevent contamination.
Liq-Glass PG pH sensor

Download our pH Measurement Guide

pH Measurement Guide

Get a better understanding of pH measurement in Hamilton’s comprehensive pH Measurement Guide. This 68-page booklet is intended for anyone with an interest in pH sensor technology or anyone who needs to implement pH sensors in controlled environments such as laboratories and industrial plants.

The guide covers the following essential topics:

  • Definition of pH scale
  • The NERNST equation
  • The pH measurement system and measurement chain characteristics
  • Applications, calibration, and maintenance of Hamilton's pH sensors
Download the Guide

pH Sensors Resources

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

Brochure

Brochure - pH Measurement Solutions

Guide

Guide to pH Measurement

Get a better understanding of pH measurement in Hamilton’s comprehensive pH Measurement Guide. This 68-page booklet is intended for anyone with an interest in pH sensor technology or anyone who needs to implement pH sensors in controlled environments such as laboratories and industrial plants.

Brochure

BioPharma

Discover Hamilton's innovative solutions for process analytics in biotechnological and pharmaceutical industries in our brochure.

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

Brochure

Brochure - pH Measurement Solutions

Guide

Guide to pH Measurement

Get a better understanding of pH measurement in Hamilton’s comprehensive pH Measurement Guide. This 68-page booklet is intended for anyone with an interest in pH sensor technology or anyone who needs to implement pH sensors in controlled environments such as laboratories and industrial plants.

Brochure

BioPharma

Discover Hamilton's innovative solutions for process analytics in biotechnological and pharmaceutical industries in our brochure.

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

ArcAir Software Connectivity Options

Communication between Arc sensors and ArcAir Software can be accomplished via wired or wireless (Bluetooth) connections.

Tips to Improve pH Measurement

Accurate pH control is fundamental for a wide variety of industrial bioprocesses. Some of those processes are based on cell or microbial cultures where the pH value has to be kept within a narrow range. This video shows the three most helpful tips to ensure optimal growth and product yield.

The Measurement of Potential Difference

The pH measurement is based on a voltage potential summed up from the pH measurement chain. This article provides a brief introduction to the concept of the potential voltage difference as well as glass membrane impedance.

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

Can Hamilton pH and ORP sensors be used with my existing transmitter?

In most cases, yes! The output signal for traditional glass membrane pH sensors will work with other manufacturer's transmitters and analyzers. In addition, Hamilton MemoSens pH sensors can be connected to other brands of MemoSens transmitters. Contact Hamilton Technical Support for additional assistance on wiring or cross compatibility.

How much torque is needed to install a sensor with PG13.5 threads?

Sensors with PG13.5 threads rely on the o-ring to seal against process pressure. Finger-tight (approximately 2 Newton Meter or 18 inch-lb) should be sufficient to install the sensor without leakage. Additional tightening beyond this can deform the o-ring or strip the threads.

How are the housings for refillable pressurized pH / ORP sensors such as the ChemoTrode actually pressurized?

The ChemoTrode requires a pressurized housing such as the MasterFit or RetractoMaster for proper installation. These housings use a Dunlap valve (bicycle tube valve) which permits pressurizing the chamber with the sensor up to 6 Bar. A simple bicycle pump with a Presta or Dunlap pump head can be used for this purpose.

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

Ph Hands on Webinar

Hamilton pH: Quick Setup to Control your Process

In this hands-on webinar, you'll gain a thorough understanding of pH measurement, from sensor selection and configuration to process optimization. Learn how Hamilton solutions can streamline your processes and ensure accurate results in pH measurement.
pH in-line Measurement Webinar

ORP Measurement for Microbial Applications

Join our webinar and learn how ORP control increases process knowledge and final product quality and quantity in microbial applications.

Services

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.

Let's Talk

Connect with a Hamilton expert to discuss solutions for your workflow. We are here to enable your success.

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