A new generation of fibre optic oxygen sensors based on luminescence lifetime the OxyMini system is optimized for process control and biotechnology applications. The OxyMicro is designed for medical research applications including implanting into tissues, cell cultures, profiling of biofilms and sediment related bioassays. The measurement principle of the sensor system is based on the detection of oxygen concentration as a function of luminescence lifetime either in dissolved or gaseous phase environments.

Benefits

• Oxygen is not consumed during the experiment

• Immune to electrical and magnetic interference

• Excellent long-term stability

• No lengthy polarization necessary (e.g., as Clark-type oxygen electrodes require)

• Fast response time < 0.5 s for MicroTip sensors

• Probe size of MicroTip sensors as small as 50 µm

• Measurement is feasible in dry gas

• Optical isolation of sensor tip available for fluorescent or photosynthetically active samples

OXYMINI  

The OxyMini is a single-channel fibre optic oxygen meter for WPI’s fibre optic oxygen minisensors. These sensors are based on 2 mm polymer optical fibres and have a length of 2.5 m. A wide range of applications is possible with these sensors. 

• Process control: bottling plant in breweries and quality control of packages
• Biotechnology: Control of cell culture media and non-invasive control of bioreactors
• Implantation of oxygen sensors into soil and trees. 

MiniTip
This oxygen dipping probe (WPI #501641) has a tip diameter of 4 mm and consists of a polymer optical fibre, with a oxygen sensitive coating. The MinTip’s range is 0 to 100%. This robust sensor has a response time of approximately 40s.

MiniFlow
The MiniFlow oxygen probe (WPI #501642) is a miniaturized fibre optic chemical sensor integrated in a T-shape flow through cell. The standard T-shape flow cell can be easily connected via Luer-Lock adapters to external tubings. Liquids (e.g., water, blood, etc.) can be pumped through the cell. The sensor has a response time of approximately 40 s and an excellent long-term stability.

MiniFoil
WPI offers the sensor material on a 1 cm2 support disk made of polyester. This material can be glued, for example, inside glass vials and the oxygen concentration can be measured non-invasively and non-destructively from outside through the wall of the flask. A plastic fibre optic cable (WPI #501644, WPI #501645) is used to illuminate the sensor foil. The wall of the flask must be transparent/non-fluorescent. Response time of approximately 50 s. The material can be implanted into animal tissues or custom-made housings.

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OXYMICRO

The OxyMicro is a single channel fibre optic oxygen meter for WPI’s fibre optic oxygen microsensors. Applications include:

• Oxygen profiles of marine sediment, soils, or tissue
• Implantation into living tissue (e.g., heart or muscle tissue)
• Control of cell culture media in Biotechnology. 

MicroTip
The MicroTip (WPI #501656) is a needle-type oxygen micro sensor designed for applications where a small tip size of 50 µm and a fast response time (t90) of 1 s are necessary. The oxygen sensitive sensor tip consists of 140 µm fibre tapered to a 50 µm tip. The sensor is housed inside a stainless steel needle of 22 mm length and 0.4 mm diameter. This allows penetration through a septum rubber or similar material. These sensors are ideal for oxygen profiling in sediments and biofilms.

MicroFlow
The MicroFlow fibre optic oxygen sensor (WPI #501657) is a miniaturized fibre optic chemical sensor optimized for fast response time (t90 < 1 sec in gases, < 5 sec in liquids). The tiny probe has a tip size of 50 µm and is integrated in a T-shape flow cell for easy connection via Luer-Lock adapters to external tubings. Liquids (like water, blood, etc.) can be pumped through the cell.

MicroImplant
The MicroImplant fibre optic oxygen sensor (WPI #501658) is a implantable probe (IMP) with a tiny probe tip size 50 µm, an exposed fibre length of 5 mm and a jacket diameter of 900 µm. The IMP sensor was successfully implanted in crabs, fishes and soil.

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