Mettler Toledo InPro 3253/120/PT1000 Inline Industrial pH Electrode with PT1000 Temperature Compensation

The Mettler Toledo InPro 3253/120/PT1000 is a precision inline industrial pH electrode engineered for continuous pH measurement in process environments such as tanks, fermenters, and bioreactors. It integrates a pH sensing glass membrane and a PT1000 temperature sensor for real-time temperature compensation, ensuring highly accurate pH readings essential for bioprocess monitoring and molecular diagnostics workflows.

Key technical features include:

• Sensor shaft length: ~120 mm, suitable for installations with limited insertion depths
• Process connection: PG 13.5 threaded connector enables secure integration in process lines
• Connector type: VP industrial connector for robust connectivity in industrial settings
• Pressure rating: Up to ~4 bar gauge, suitable for moderate pressure environments
• Temperature range: 0 °C to 100 °C with built-in PT1000 temperature sensor for stable pH measurement across varying process temperatures
• Reference system: Pre-pressurized liquid electrolyte with ceramic diaphragm and Argenthal silver-ion trap for enhanced reference stability and longevity in sulfide-rich environments
• Sterilization compatibility: Fully sterilisable and autoclavable, maintaining calibration and performance after repeated steam sterilization cycles, critical for hygienic biotechnological applications
• pH measurement range: Typically 0 to 12, accommodating a broad range of process conditions

Certified for industrial and hazardous zone use (ATEX, IECEx, CE), this electrode meets stringent safety and hygiene standards, making it ideal for biomanufacturing, synthetic biology research, biomedical engineering, and molecular diagnostics. The Mettler Toledo InPro 3253/120/PT1000 is widely utilized in continuous bioprocess pH monitoring, providing stable, low-maintenance performance critical in biopharmaceutical production pipelines and live-cell fermentation processes.

This electrode’s integrated temperature compensation and rugged design ensure precise, reliable pH data essential for controlling bioprocess parameters, making it a vital instrument for laboratory and industrial biotechnology applications.