Patent ID: 7955482

Claim:
A water-proof electrochemical sensor for in situ analysis of a liquid analyte comprising: an electrode body for contacting the analyte having an upper contact end and lower sensing end, electrode body having an electrode body surface at the upper contact end; a collar attached to the electrode body surface of said electrode body axially inward of the upper contact end; at least one electrochemical sensor contained within said electrode body and extending from the lower sensing end for contacting the analyte; a pin contact for electrically connecting said at least one electrochemical sensor to external electronics extending from the upper contact end; and a resilient elastomeric generally cylindrical boot having an upper end and a lower end and an internal groove adapted to press-fit the collar, the upper end of the boot having an opening adapted to form a tight interference fit with said pin contact and the lower end of the boot having an opening adapted to form tight interference fit with the electrode body whereby a water-proof seal is formed around the upper contact end of the electrode body for undersea depths.