Hamilton EasyFerm Bio 243632 Bioprocess pH Sensor

Overview

The Hamilton EasyFerm Bio 243632 is a high-integrity, sterilizable bioprocess pH sensor engineered for continuous, in-line monitoring in regulated life science and food manufacturing environments. It operates on the principle of potentiometric measurement via a glass pH-sensitive membrane and a stable reference system filled with Foodlyte™ electrolyte—a biocompatible, low-chloride, non-toxic reference gel certified to ISO 10993-5 and compliant with EHEDG (European Hygienic Engineering & Design Group) Guideline 8. Designed specifically for sterile process applications, the sensor integrates seamlessly into stainless-steel sanitary fittings (e.g., Tri-Clamp® or DIN 11851) and supports repeated exposure to autoclave cycles (121–135 °C), steam-in-place (SIP), clean-in-place (CIP), and aggressive cleaning agents without performance degradation. Its robust construction includes a chemically resistant pH glass formulation (PHI-type variant) optimized for long-term stability at alkaline pH (>10), minimizing drift and sodium error in cell culture, fermentation, and downstream purification processes.

Key Features

• EHEDG-certified hygienic design validated for SIP (up to 135 °C), CIP (including NaOH, HNO₃, and peracetic acid), and autoclaving (121 °C, 20 min, ≥100 cycles)
• Foodlyte™ reference electrolyte—non-leaching, low-chloride, ISO 10993-5 biocompatibility tested and suitable for GMP-compliant biopharmaceutical production
• PHI-type pH glass membrane offering enhanced chemical resistance and reduced alkaline error above pH 10, critical for mammalian cell culture and monoclonal antibody purification
• Integrated temperature compensation (Pt1000 RTD) enabling automatic correction across 0–140 °C (digital output) or 0–110 °C (analog output)
• Pressure rating up to 6 bar (gauge), compatible with pressurized bioreactors and tangential flow filtration (TFF) skids
• Low-maintenance architecture with extended service life (>12 months typical in continuous operation), minimized fouling due to optimized diaphragm geometry and hydrophilic junction

Sample Compatibility & Compliance

The EasyFerm Bio 243632 is validated for use in complex, viscous, and protein-rich media including CHO and HEK293 cell culture broths, microbial fermentations (E. coli, yeast), whey-based dairy streams, and plant-derived biopolymers (e.g., xanthan gum, carrageenan). It meets EHEDG Guideline 8 for hygienic equipment design and has undergone full cleaning validation per ASTM F2887 and ISO 14159. The sensor complies with FDA 21 CFR Part 11 requirements when paired with Hamilton’s Arc or Mira software platforms, supporting audit trails, electronic signatures, and data integrity controls. It is also suitable for environments governed by EU Annex 1 (sterile manufacturing), USP , and ICH Q5C guidelines for analytical method validation in biologics manufacturing.

Software & Data Management

The 243632 sensor interfaces natively with Hamilton’s Arc™ Process Analytics Platform and Mira™ Lab Software, enabling real-time calibration tracking, drift diagnostics, and predictive maintenance alerts. All calibration events—including two- or three-point buffer adjustments using NIST-traceable pH 4.01, 7.00, and 10.01 standards—are timestamped and stored with operator ID, buffer lot number, and temperature metadata. Data export supports CSV, PDF, and XML formats aligned with ALCOA+ principles (Attributable, Legible, Contemporaneous, Original, Accurate + Complete, Consistent, Enduring, Available). Optional integration with DeltaV™, DCS, or MES systems via Modbus TCP or 4–20 mA analog output ensures seamless alignment with enterprise-level process control and quality management systems (QMS).

Applications

• Upstream processing: Real-time pH control in stirred-tank bioreactors (STRs), single-use bioreactors (SUBs), and perfusion systems
• Downstream processing: Monitoring during diafiltration, ion exchange chromatography, and viral inactivation hold steps
• Food & beverage: In-line pH verification in brewing kettles, dairy pasteurization lines, and plant-based protein fermentation
• Cell & gene therapy: Sterile pH monitoring in closed-system expansion bioreactors and wash/concentrate steps
• Regulatory submissions: Supporting process validation protocols (PQ/IQ/OQ) and batch record documentation under cGMP

FAQ

What sterilization methods are validated for the EasyFerm Bio 243632?

Steam-in-place (SIP) at 121–135 °C, autoclaving (121 °C, 20 min), and CIP with 0.5–2.0 M NaOH or 0.5–1.0 M HNO₃ are fully validated per EHEDG Test Method TM8.
Is the sensor compatible with single-use bioreactor bags?

Yes—when mounted in Hamilton’s sterile-weldable or gamma-sterilizable sanitary adapters (e.g., S80 or S100 series), it supports direct integration into single-use systems without compromising sterility assurance.
How often does the sensor require recalibration in continuous operation?

Under stable process conditions, calibration interval is typically 24–72 hours; automated drift detection in Arc software triggers alerts when slope deviation exceeds ±5% or asymmetry exceeds ±15 mV.
Can the 243632 be used in high-protein or viscous fermentation broths?

Yes—the optimized open-junction diaphragm design minimizes clogging, and the Foodlyte electrolyte reduces protein adsorption and junction potential drift in feeds containing >10 g/L total protein.
Does the sensor support FDA 21 CFR Part 11 compliance?

Yes—when configured with Hamilton Arc software and appropriate user access controls, full electronic record and signature functionality—including audit trail, role-based permissions, and data encryption—is implemented per Part 11 Subpart B requirements.