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Immobilization using glutaraldehyde and BSA. Measurement condition: input potential −0.2 V (versus Ag/AgCl); 0.1 M phosphate buffer (pH 7.5); measured with SPCE/RhO2/GOx; analysis in a batch arrangement; concentration of glutaraldehyde: 1–0.625%, 2–1.25%, 3–2.5%, 4—immobilization with vapour of glutaraldehyde.
