Single-Use pH Probes — OneFerm
Still Using Reusable pH Sensors in Single-Use Applications?
Hamilton OneFerm sensors are the next step in the evolution of single-use measurement. Their design solves some of the issues that commonly occur with reusable pH sensors that are inserted into the bag.
Specifically, Hamilton's single-use sensors combine the reliability and measurement stability of our long-term proven conventional sensors with the ease of use as an integral part of the bioreactor. The sensors retain the high accuracy performance even after gamma irradiation and a sufficient shelf life making it the ideal single-use solution.
OneFerm - Traditional
OneFerm - Arc
Learn More About Our Single-Use Sensors
Trusted Design
Optical vs. Glass: Which is the Best Technology for Single-Use pH?
The glass pH electrode is widely considered the most robust and reliable device available for pH measurement. Yet, traditional glass sensors are not designed for a single-use environment because they require laborious handling and increased risk of contamination.
While optical technology exists for single-use pH measurement, that technology has not delivered the reliable accuracy that bio-process engineers depend on.
By contrast, Hamilton's single-use OneFerm pH sensors feature the high-accuracy and performance of a traditional glass pH electrode, even after gamma irradiation and dry storage.
Anatomy of OneFerm pH
| Criteria | Description |
|---|---|
Shaft length options |
70 mm, 120 mm, 225 mm, 325 mm, 425 mm |
Electrical Connector |
K8, VP6 (traditional) / VP8 (Arc) |
Temperature Sensor |
PT100, PT1000 (traditional) / NTC 22 kOhm (Arc) |
pH measuring range |
3–10 |
Drift |
< 0.1 pH / week |
Wetted Parts |
Glass / VMQ (Silicone elastomer) |
How Do I Purchase OneFerm Sensors?
Hamilton single-use sensors are currently only available to integrators such as bag, bioreactor, and downstream skid manufacturers.
- Bioreactor, bag, and downstream skid manufacturers are encouraged to contact Hamilton to discuss integration opportunities.
- End-users at biopharmaceutical companies are encouraged to ask their single-use solution provider if Hamilton sensors are available for their installation.
Explore Hamilton's Entire Single-Use Portfolio
Designed Specifically to Meet Your Single-Use Requirements
Our single-use sensors combine the reliability and measurement stability of our long-term proven conventional sensors with the ease of use as an integral part of the bioreactor. The sensors retain the high accuracy performance even after gamma irradiation and a sufficient shelf life making it the ideal single-use solution.
Resources
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Catalog - Process Analytics
Download the Process Analytics sensor catalog to learn about the complete offering of Hamilton process sensors and accessories. -
Quick Guide - Arc Single Use pH Module
Quick Guide for the Arc Module SU pH describing most important functions for integration and installation of the Arc Module SU pH for the OneFerm pH sensor. -
Manual - OneFerm pH Sensors
Manual for OneFerm pH single use sensors describing the most important functions of this sensor.
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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.
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What type of electrical connector does my sensor have?
There are multiple styles of electrical connectors used with sensors. See each style of connector and learn where they are used to decide which one fits your needs. -
What type of process connection does my sensor have?
There are multiple styles of process connections found on sensors. View each connection to help understand what may fit your needs. -
Working with OneFerm Single-Use pH Sensors
This Knowledge Base article reviews common questions on installation and usage of OneFerm Single-Use pH sensors.
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