PreSens' Featured System for Non-Invasive O₂ Measurements

The battery powered Fibox 4 is designed for easy handheld use. The robust, splash-proof housing and controls were contrived to be operated even under harsh conditions while wearing heavy gloves. The oxygen meter adapts to dry or humid environmental conditions, and has temperature as well as automatic pressure and salinity compensation. The Fibox 4 is compatible with sensor type PSt3 (detection limit 15 ppb dissolved oxygen, 0 – 100 % oxygen). With the oxygen meter’s integrated barcode reader sensor identification and calibration can be realized by performing just one scan. With the implemented sensor management system data of up to 100 sensors can be stored. Fibox 4 has 16 GB internal memory which allows prolonged computer-independent operation. The device is delivered with the PreSens Datamanagement software allowing data transfer to a PC for further analysis.

A polymer optical fiber (POF) is needed to transfer excitation light to the sensor and the sensor response back to the meter. We offer different versions for different meters depending on their optical connector type. A POF enables non-invasive and non-destructive measurements to be made from the outside through the wall of a transparent or slightly colored container. The POF with SMA connector is compatible with meters of the Fibox, OXY-1 SMA, OXY-1 WM,OXY mini and pH-1 SMA series, as well as the CO2-1 SMA. The POF with ST connector is compatible with meters of the Microx 4 and OXY-1 ST series. Different standard lengths are offered, e. g. 2.5 m, and fibers with connectors on one or both ends are available, depending on your adapter or sensor application.

Sensor spots are the most versatile version of non-invasive optical oxygen sensors. The red side of the spot can be attached to the inner surface of any transparent glass or plastic vessel like e. g. shake and spinner flasks, tubes, Petri dishes or cultivation bags. Oxygen is measured contactless and non-destructively through the transparent vessel wall. The SP-PSt3-NAU has a measurement range of 0 – 100 % oxygen in dissolved or gaseous phase. The oxygen sensitive coating is immobilized on 125 µm flexible transparent polyester foil, which does not stand autoclaving.