The new NeoFox Sport from Ocean Optics is a portable, hand-held optical oxygen sensor for measuring dissolved and gaseous oxygen pressure in a variety of media. Comprised of a probe- or patch-based oxygen sensor, plus a phase fluorometer, the fluorescence-based system includes an on-board micro­processor with low-power OLED display, a user interface and a battery pack. The user interface permits such functions as setting single- or multiple-point calibration and displaying oxygen readings in percent oxygen, partial pressure, moles per litre and other parameters. Data is captured and stored to a 2-GB SD card for retrieval on the system itself or via an SD reader connected to a PC. Response times range from <1.0 s in gas to ~ 30 s in liquids, with dissolved oxygen range of 0–100% for most applications.

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