
Specs at a glance
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Measurement range
0 to 4 AU
0 to 8 OD (depending on optical path length) -
Process temperature
0 to 90 °C (32 to 194 °F)
Max. 135 °C for max. 2 hours -
Process pressure
Max. 10 bar abs at 90 °C
(Max. 150 psi at 194 °F)
Field of application
The OUSBT66 NIR absorption sensor monitors cell growth, biomass processes, algae systems and crystallization processes. It provides you with reliable, precise measured values in real-time to optimize your process and your product yield. The sensor's hygienic design is CIP/SIP resistant and allows autoclavation. Equipped with NIST-traceable and certified clip-on filters, OUSBT66 is outstandingly easy to calibrate and verify.
The OUSBT66 sensor measures the cell density, biomass and suspended solids in life sciences applications, such as:
Cell growth in bacterial fermentation
Mammalian cell culture applications
Biomass during fermentation processes
Monitoring of algae concentration
Monitoring of crystallization processes
Suspended solids measurement
OUSBT66 is suitable for laboratory, pilot scale and production fermenters and bioreactors.
Benefits
Real-time measurement for optimized processes and product yields
Reliable, precise measured values with excellent laboratory correlation
Easy verification and calibration with NIST-traceable clip-on filters - no need for complex liquid calibrations
Hygienic stainless steel body and sapphire windows without seals or crevices
Suitable for CIP/SIP and autoclaving
Various path lengths and sensor lengths for perfect fit into every fermenter and bioreactor
PG 13.5 thread for standard assemblies or head plate installations
Extended selection
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High-end products
- Highly functional and convenient
Technical excellence
Simplicity

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Standard products
- Reliable, robust and low-maintenance
Technical excellence
Simplicity
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Specialized products
- Designed for demanding applications
Technical excellence
Simplicity
Variable
FLEX selections | Technical excellence | Simplicity |
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Fundamental selection Meet your basic measurement needs |
Technical excellence
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Simplicity
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Lean selection Handle your core processes easily |
Technical excellence
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Simplicity
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Extended selection Optimize your processes with innovative technologies |
Technical excellence
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Simplicity
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Xpert selection Master your most challenging applications |
Technical excellence
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Simplicity
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