Ocean Optics OOISensors - Manual (Page 98)

6: Hardware Data Sheets and Instructions
Sample spectra indicative of a compromised probe overcoat
FOXY-AF and FOXY-AF-MG Silicone Overcoats
The FOXY-AF Silicone Overcoat and the FOXY-AF-MG Silicone Medical-grade Overcoat are room
temperature vulcanized (RTV) silicone adhesives used as additional coatings for the oxygen probes.
Overcoats protect the oxygen probes from ambient light, improve chemical resistance, and eliminate
refractive index effects of the sensing environment. A silicone overcoat is required for applications
involving liquids or gas-to-liquid activity.
FOXY-AF is a multi-surface healthcare-grade silicone while the FOXY-AF-MG is a high-strength
acetoxy, implant-grade silicone. The FOXY-AF-MG provides a thicker and stronger coating than the
FOXY-AF. Both overcoats increase the response time of the sensor.
The overcoats are made from a silicone adhesive designed for use in fabricating elastic bonds to silicone,
polyester, and other substrates. Following cure, the overcoat is of the same chemical composition as other
implant-grade silicone elastomers and it contains no solvents or plasticizers. Both overcoats are designed
and tested to meet ISO 10993 biocompatibility test requirements.
Cleaning
Use a 10% hypochlorite detergent solution to clean probes with an overcoat. Using detergents to clean the
probe does not necessitate calibration.
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