Polyplast PRO RX

Part # 238409

Achieve reliable ORP measurements in water applications with high risk of sensor breakage and low conductivity samples, thanks to the maintenance-free Polyplast Pro RX sensor.

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Polyplast PRO RX Details

The Polyplast Pro RX is a maintenance-free oxidation-reduction potential (ORP) sensor specifically designed for water applications and low-conductivity samples where sensor breakage is a concern. Building on Hamilton's proven ORP sensor technology, Polyplast Pro RX 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 delivers reliable measurement performance while making clogging nearly impossible, helping to ensure stable measurements throughout the sensor lifetime.

Constructed with a robust, shatterproof plastic shaft and integrated glass bulb protection, Polyplast Pro RX is designed for demanding field and portable measurement applications. The durable construction protects the sensing element from mechanical damage while supporting long service life and dependable operation in challenging environments.

Polyplast Pro RX combines maintenance-free operation, reliable measurement performance, and robust mechanical protection, making it an economical and long-lasting solution for ORP monitoring in water applications and low-conductivity media.

Common applications Water, Energy, & Environment, Water and Wastewater, Pharma & Biopharma, Bioprocess Upstream, Biotechnology

Accurate, low-maintenance ORP sensing for reliable water quality control.

Achieve reliable measurements in low conductivity samples.

Robust Construction

  • Designed for applications where sensor breakage is a concern.
  • This durable construction ensures reliability and extends the sensor's service life in demanding environments.

Single Pore Liquid Junction

The Single Pore liquid junction that guarantees best measurement results and makes clogging nearly impossible due to direct contact between the sample and Polisolve electrolyte

  • 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

Polyplast PRO RX Specifications

Print
Process Connection PG13,5
Wetted Parts Platinum
GΙass
EPDM (Ethylene propylene elastomer)
SAN (Polystyrene-Acrylonitrile)
Electrical Connector S8
a-length 120 mm
Parameter ORP
Measuring Range -2000 mV to +2000 mV
Electrolyte Polisolve
pH Glass Resistance Moderate
ORP Element Pt wire
Membrane Shape Spherical
Diaphragm Single Pore
Number of Diaphragms 1
Reference System Ag/AgCl
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 No
ATEX Approval II 1/2 G Ex ia IIB T4/T5/T6 Ga/Gb; II 1/2 D ia IIIC T x °C Da/Db
IECEx Approval II 1/2 G Ex ia IIB 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 40 °C (60 °C short exposure)
Sample min Conductivity 50 µS/cm
Pressure Range bar g 0 to 6 bar

Compatibility with Hamilton Devices

Explore the limitless possibilities of Hamilton products.

Polyplast PRO RX 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.

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FAQ

What is a polymer-filled sensor and why would I choose it?

Polymer-filled sensors use solid (or nearly solid) electrolyte. This design keeps electrolyte from flowing out of the sensor and process liquid from poisoning or clogging the sensor. Polymer filled sensors are a great choice for industrial applications with strong chemicals, particulates and elevated pressures.
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FAQ

What is the difference between ORP and Redox?

They are the same. Redox is a shortened word for “Reduction Potential”. ORP is shortened for “Oxidation Reduction Potential”. The sensor and measurement is the same.
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FAQ

How do I clean an ORP sensor?

The platinum band around the tip of the ORP sensor can oxidize over time. Light scrubbing with a mild abrasive such as toothpaste will remove the oxidization. Rinse with potable water and store in storage solution prior to usage
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.

Field Service for the Microlab Prep

Expert service and support for your Hamilton Microlab Prep including installations, preventative maintenance, and more.

Qualification IQ/OQ

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

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.

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.

Modular Service Contracts

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

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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