An ultramicro oxygen electrode

Abstract

The advantages of a 1-μ-diameter platinum cathode in the Clark-type oxygen electrode are shown to be freedom from effects due to flow, stirring, or mechanical pressure. When used with a 5-mil polyethylene membrane the 1-μ electrode shows only a 2% difference between a vigorously stirred solution and the unstirred solution. A mechanical pressure of 200 psi on the 1-μ covered electrode caused only a 20% reduction in current. The use of a 1-μ covered electrode as an implant is suggested. electrode implant; Clark-type oxygen electrode modification; polarographic electrode; oxygen measurement; platinum electrode Submitted on March 4, 1963