Support layer for enzyme electrode laminated membranes

Chemistry: electrical and wave energy – Apparatus – Electrolytic

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204403, 205778, 435 14, 4352878, 435817, 4352879, G01N 2726

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active

055207880

ABSTRACT:
Improved Newman type enzyme containing laminated membranes are disclosed for use in conjunction with polarographic cells to measure analyte concentration in solutions. The laminated membranes comprise a semipermeable outer, support layer including super large pores of greater than about 200 .ANG. in diameter. The outer layer preferably comprises pore sizes of about 380-750 .ANG. in diameter and has a percentage porosity of about 0.005-0.2%.

REFERENCES:
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patent: 4886740 (1989-12-01), Vadgama
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Article"Ultrafilter Membranes And Ultrafiltration" John Douglas Ferry, Department of Chemistry, Stanford University, California, Oct. 28, 1935--pp. 373-455--Chemical Reviews, vol. 18, No. 3.
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Article "Membrane Diffusion Studies With Proteins And Nucleic Acids" Jack Goldstein and Lyman C. Craig, The Rockefeller Institute, New York, NY--Feb. 17, 1960--pp. 1833,1834.
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Article "On The Permeation Of Cellophane Membranes By Diffusion" by L. B. Ticknor, Apr. 21, 1958--pp. 1483-1485.
Article "Dialysis Studies. VI. Experiments With Amino Acids" by Lyman C. Craig and Allen Ansevin, Laboratories of Rockefeller Institute, New York City, May 20, 1963, pp. 1268-1271.

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