A nover fiber optic pH system

pHOptica™ is a pH measuring system which uses fiber optic sensors and patented DLR technology. This method allows referenced measurements with single excitation to be implemented.

Features of pHOptica Meter

• Single-channel, compact, easy to transport fiber-optic meter for pH measurements with miniature sensors
• Two 12-bit, programmable analog outputs, with electrical isolation
• One external trigger input, with electrical isolation
• Computer with RS232 interface required for operation
• User-friendly software saves and visualizes measured values
• Several pHOptica meters can be connected to one computer
• Temperature variation is recorded using a temperature sensor

Features of pH Optical Sensors

• No reference electrode is needed
• Immune to electrical interferences and magnetic fields
• Low drift
• High spatial resolution due to small tip size
• Measurement in very small sample volumes
• Additional optical isolation of the sensor tip is available for measurements in colored or photosynthetically active samples

Applications

The pHOptica mini system is a single channel pH system for use with fiber optic mini sensors, foil and spot surface sensors. The applications include: non-invasive and non-distractive pH measurements from outside through flask walls (cell culture), online pH monitoring by flow through cells, and dipping probe pH measurements.

Mini Sensor Features

• OD of the dipping sensor is 4 mm
• Sterilization of the pH sensor spots via gamma radiation
• The pH mini sensor meter is based on 2 mm PMMA waveguides
• Drift of 0.1pH units for 10,000 measurements (4 days measurement in the 30 sec data update mode).