Polilyte RX 120

Polymer-Filled ORP Sensor

Part # 238433

The Polilyte RX 120 sensor provides reliable ORP measurements in water applications, particularly in low conductivity samples. Its Single Pore liquid junction and Polisolve electrolyte prevent clogging, ensuring accurate and consistent results.

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Polilyte RX 120 Details

The Polilyte RX 120 is a maintenance-free oxidation-reduction potential (ORP) sensor specifically designed for water applications and low-conductivity samples. Building on Hamilton's proven ORP sensor technology, Polilyte RX 120 provides reliable ORP measurements in applications such as wastewater treatment, fish farming, and groundwater monitoring.

The sensor utilizes a Single Pore liquid junction that provides direct contact between the sample and the Polisolve electrolyte. This design virtually eliminates clogging, helping to ensure reliable measurement performance and stable ORP monitoring throughout the sensor lifetime.

Optimized for low-conductivity media, Polilyte RX 120 delivers fast response times and dependable measurement results even in challenging water applications. The robust sensor design supports long-term operation while allowing simple installation without the need for an additional housing.

Combining maintenance-free operation, fast response characteristics, and reliable measurement performance, Polilyte RX 120 provides a practical solution for ORP monitoring in water applications and low-conductivity media.

Common applications Water, Energy, & Environment, Water and Wastewater

Maintenance-free design with Single Pore technology eliminates clogging for consistent performance in water samples

 Maintenance-free design with Single Pore technology eliminates clogging for consistent performance in water samples

Achieve fast and reliable ORP measurements, even in challenging low conductivity water environments

Single Pore Liquid Junction

  • This innovative design ensures direct contact between the reference electrode and the sample through a single, virtually uncloggable hole.
  • Paired with the Polisolve electrolyte, it prevents clogging and maintains stable measurements, especially in complex samples.

Robust Design

Designed  to withstand demanding applications in pharmaceutical and chemical industries.

  • 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

  • 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

Polilyte RX 120 Specifications

Print
Process Connection PG13,5
Wetted Parts Platinum
GΙass
EPDM (Ethylene propylene elastomer)
(FDA 21 CFR 177.2600; EU 1935/2004; USP <88> Class VI - 121 °C)
Electrical Connector S8
a-length 120 mm
Measuring Range -2000 mV to +2000 mV
Electrolyte Polisolve
ORP Element Pt wire
Membrane Shape Spherical
Diaphragm Single Pore
Number of Diaphragms 1
Reference System Hamilton Everef-B
Liquid Earth No
Temperature Sensor No
O-ring Material FDA 21 CFR 177.2600; EC 1935/2004; USP <87>; USP <88> Class VI (121 °C)
Serial Number Yes
Recommended Storage Hamilton Storage Solution or 3 M KCl
Certificate Yes, with measured value in ORP buffer +475 mV
ATEX Approval II 1/2 G Ex ia IIC T4/T5/T6 Ga/Gb; II 1/2 D ia IIIC T x °C Da/Db
IECEx Approval II 1/2 G Ex ia IIC T4/T5/T6 Ga/Gb; II 1/2 D ia IIIC T x °C Da/Db
Diameter 12 mm
Autoclavable No
Steam Sterilizable No
CIP No
Operating Temperature Range -10 to 60 °C
Sample min Conductivity 2 µS/cm
Pressure Range bar g 0 to 6 bar

Support your entire workflow with Hamilton's integrated products.

S7 / S8 cables: pH / ORP

Cables to mate your sensor with S7 or S8 connector to transmitters or bioreactor controllers.

Duracal pH Buffer Solutions

Patented buffer solutions provide pH stability of up to five years. High buffering capacity provides rapid and stable calibration.

Polilyte RX 120 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.

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

FAQ

Does temperature influence pH measurements

Yes, temperature can influence both pH and ORP measurements! Click on the header to learn more.
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FAQ

What is the expected lifetime of my pH sensor?

Expected pH sensor lifetime is dependent on the application. Exposure to strong chemicals, elevated temperature, fluctuating pressure, and solid build-up can all impact the sensor life. As the sensor ages, a sluggish response may become more apparent, and will require more frequent calibrations to compensate for this change. The overall health of the Arc pH sensors can be seen using the quality indicator in ArcAir software.
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FAQ

What is the difference between pH and ORP?

pH and ORP sensors look alike but have different measurement principles. What exactly is their difference?

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

pH Probe Storage

Article

pH Sensor Storage

The requirements of the pH glass membrane measurement electrode and the electrolyte filled reference electrode must both be considered to determine the best way to store a combination pH sensor.
Three Hamilton 500 ml bottles: pH Glass Cleaning Solution A, Solution B, and Storage Solution for pH sensors.

Article

pH Sensor Cleaning

Lack of pH sensor cleaning can result in poor accuracy and response time. There are several methods of cleaning depending on the deposits on the membrane glass or the liquid junction. This article provides best practices on how to clean depending on the problem.
Green circle icon with a dark navy lightbulb containing two interlocking gears, on a teal dotted background.

Article

pH Sensor Design

The first commercially available glass membrane pH sensors were launched to the marketplace in the mid-1930s. The sensors of today still rely on the same design principles as these first products.
Services
Application and Technical Support

Hamilton's Technical Support team is here to provide product trouble-shooting, repair, application support, virtual start-up support, and more.

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 Training

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

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.

Modular Service Contracts

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

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