Inventors:
Robert C. Gross - Rochester NY
Susan C. Gross - Rochester NY
Assignee:
Eastman Kodak Company - Rochester NY
International Classification:
G01N 2178, G01N 3352, G01N 3366
Abstract:
A multizone element, for quantitative analyte determination in whole blood, containing a porous spreading zone separated from a reagent zone by a barrier zone, said barrier zone comprising a non-porous film comprising a polymer of: from 30 to 95 percent by weight of polymerized monomer having the structure ##STR1## from 0. 25 to 30 percent by weight of polymerized monomer having the structure ##STR2## and from 0. 1 to 50 percent by weight of polymerized monomer having the structure ##STR3## wherein: R. sup. 1, R. sup. 3, and R. sup. 5 are independently selected from the group consisting of hydrogen and methyl,
R. sup. 2 is alkyl of from 1 to 16 carbon atoms,
R. sup. 4 and R. sup. 6 are independently selected from the group consisting of alkylene groups having from 1 to 6 carbon atoms, ##STR4## wherein R. sup. 7 is hydrogen, alkyl of 1 to 10 carbon atoms, or cycloalkyl of 5 to 10 carbon atoms, and
M is NR. sup. 8 R. sup. 9 H. sup. + X or SO. sub. 3. sup.