Applikon Dissolved Oxygen Probe 370 mm

Applikon (AppliSens) Z71202AP20 Dissolved Oxygen (DO2) Sensor – 370 mm Insertion Length, 12 mm PG13.5 Thread, Electropolished Surface (MPN: Z71202AP20)

Used. Great condition. 60 day warranty.

The Applikon Z71202AP20 (part of the AppliSens PAT analytical sensor line under Getinge) is a high-precision, research-grade polarographic Dissolved Oxygen (DO2) sensor engineered for continuous online monitoring in benchtop fermenters and industrial bioreactors. Built with a 370 mm insertion length and standard 12 mm shaft diameter with a PG13.5 threaded headpiece, this probe fits directly into the top plates and side ports of mid-to-large-volume autoclavable glass bioreactors (typically 7L to 15L systems) as well as pilot-scale stainless steel vessel ports. Featuring a high-grade electropolished 316L stainless steel shaft and a durable titanium/PEEK membrane module, the Z71202AP20 provides minimal measurement drift, rapid response times, and exceptional signal stability during long-term microbial fermentation and mammalian cell culture runs.

Technical Performance and Engineering

• Polarographic Measurement Principle: Utilizes a classic electrochemical reaction cell consisting of a platinum cathode and silver/silver chloride (Ag/AgCl) anode submerged in an alkaline electrolyte, delivering precise oxygen partial pressure measurement ($p\text{O}_2$).

• Electropolished Surface Finish: Manufactured with an ultra-smooth electropolished finish ($\text{Ra} < 0.4\ \mu\text{m}$) that minimizes cell debris accumulation, suppresses biofilm adhesion, and guarantees easy cleaning during CIP/SIP protocols.

• Titanium / PEEK Membrane Module: The protective membrane cap utilizes robust titanium and PEEK materials to prevent mechanical deformation during sterilization and minimize long-term signal drift ($<2\%$ per week).

• Autoclave and SIP Compatibility: Engineered to withstand repeated high-temperature steam sterilization cycles (autoclaving at $121^\circ\text{C}$ or Sterilization-In-Place) without compromising internal seals or membrane integrity.

Product Specifications

• Part Number / MPN: Z71202AP20 (Cross-listed as Applikon Z71202AP20 / AppliSens DO2 370mm)

• Manufacturer / Brand: Applikon Biotechnology / Getinge (AppliSens Line)

• Sensor Type: Polarographic Dissolved Oxygen ($p\text{O}_2$) Sensor

• Insertion Length: 370 mm

• Shaft Diameter & Thread Interface: 12 mm shaft with standard PG13.5 threaded connector

• Electrical Connector Type: Standard K9 / AK9 connector

• Wetted Materials: 316L Electropolished Stainless Steel, Titanium, PEEK, and FDA-compliant silicone seals

• Bioreactor Vessel Compatibility: Fits Applikon 7L, 15L, and 20L autoclavable glass systems, as well as 12 mm side ports on stainless steel bioreactors

Key Benefits and Applications

• Bioprocess Optimization: Delivers real-time oxygen saturation data to feed control systems (regulating agitation, gas flow rates, and $\text{O}_2$ sparging ratios) for optimal cell growth and protein expression.

• cGMP & FDA Compliance: Constructed entirely from FDA-approved, non-cytotoxic materials suitable for validated pharmaceutical production and clinical trial material manufacturing.

• Universal PG13.5 Interoperability: Standardized mounting thread allows compatibility not only with Applikon Bio controllers, but also with other major bioreactor platforms (e.g., Sartorius, Eppendorf/New Brunswick, Broadley-James).

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