Oxygen Probe for Sterile Conditions.The InPro 6860i is a high-performance optical dissolved oxygen sensor designed for biotechnology, fermentation, and other hygienic processes requiring premium accuracy, low maintenance, and full steam-sterilizable capability. This 12 mm DO sensor is built for bioreactors, cell culture vessels, and sterile environments where reliability and cleanability are critical
Sensor for Biopharma & Fermentation
The InPro 6860i is ideal for fermentation and cell culture applications. Its optical measurement design delivers stable readings without electrolyte, membranes, or polarization delays — providing fast start-up and simplified operation.
Durable and Hygienic Design
Made from 316L stainless steel with a highly polished hygienic finish (Ra < 0.4 µm), the 6860i is engineered for aseptic conditions:
- Steam-sterilizable
- Autoclavable to 140 °C
- CIP-resistant
- The sensor’s robust optical cap (OptoCap) and EPDM FDA-approved O-rings ensure reliable long-term use.
Advanced ISM Predictive Diagnostics
As an ISM digital optical sensor, the 6860i provides:
Plug-and-measure start-up
Predictive maintenance indicators
Lifetime tracking and diagnostics
Automatic temperature compensation
This reduces downtime and optimizes calibration schedules
| Measurement Parameter |
Oxygen |
| Measurement Technology |
Optical (luminescence-based) |
| Accuracy |
In aqueous media: ± (1 % + 8 ppb)
In liquids with CO₂: ± (1 % + 8 ppb) |
| Response Time |
T98 = < 90 s @ 25°C (77°F)(air to N2) |
| IP rating |
IP68 |
| Primary Media/Application |
Biotechnology, fermentation, cell culture |
| ISM (Digital) or Analog |
ISM (Digital) |
| Anti-Bubble Design |
No |
| Wetted Metallic Material |
316L stainless steel |
| Surface Roughnes of Wetted Material |
N5/Ra16 (Ra=0.4µm/16µin) |
| Sensor Diameter |
12mm |
| O-Ring Material |
EPDM |
| Process Connection |
Pg 13.5 |
| Sensor Length |
120 mm |
| Wetted membrane material |
PTFE |
| Connector Design |
Straight |
| Model Family |
InPro 6000/6860i |
| Autoclavable/Sterilizable |
Yes |
| CIP resistant |
Yes |
| Mechanical Temp. Range |
-4 °F – 284 °F (-20 °C – 140 °C) |
| Operating Pressure (Bar) |
0.2–6 Bar |
| Operating Pressure (PSI) |
0–87 PSI |
| Design Pressure |
174 psi (12 bar) |
| Cable Connector |
K8S |
| Hygienic/Biocompatibility Approvals |
FDA USP Class VI |
| Hazardous Area Approvals |
ATEX:/IECEx: Ex ia IIC T6/T5/T4/T3 Ga/Gb/Ex ia IIIC T69°C/T81°C/T109°C/T161°C Da/Db |
| Certificates & Approvals |
Quality certificate, Material certificate 3.1, Surface finish certificate, ATEX/IECEx/FM certificate, FDA/USP Class IV |
| Sensor signal in air at 25 °C (77 °F) |
50-110 nA |
| Detection limit |
6 ppb |
| Measurement Range |
0-60% O2 saturation |
| Sterilizable/Autoclavable |
Yes |
