In situ oxygen and pH monitoring

Monday, 11 September, 2006 | Supplied by: Lastek Pty Ltd


Ocean Optics offers unique sensors that can be used to monitor oxygen or pH in biological samples, headspace gasses, slurries, cosmetics, foods, gasses and liquids in natural environments. The picture shows a FOXY fibre optic oxygen probe monitoring headspace gas in food packaging.

Combining its expertise in miniature fibre optic spectrometers with advances in materials science, Ocean Optics has developed a range of modular fibre optic chemical sensing systems.

The sensors are typically constructed by placing a transducer material at the tip of an optical fibre. These materials change optical properties in response to specific analytes in their immediate environment. The materials include both fluorescence-based and absorbance-based indicators. These indicators are immobilized or trapped in a variety of proprietary materials, including sol-gels, hydrophobic and hydrophilic polymers, and cellulose acetate.

The Foxy oxygen probes have many unique advantages over other techniques for monitoring oxygen. They are immune to environmental changes in pH, salinity, ionic strength, moisture, carbon dioxide and methane, and measure both oxygen gas and dissolved oxygen without consuming the oxygen or introducing electric field to the sample.

Online: www.lastek.com.au
Phone: 08 8443 8668
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