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Table 2 Comparison of analytical characteristics of biosensors based on urease adsorbed on silicalite-1-covered transducers

From: Nanosized zeolites as a perspective material for conductometric biosensors creation

Biosensor characteristic Biosensors based on transducers covered via spin coating Biosensors based on transducers covered via drop coating
Time of steady-state response 1 min 1.5 to 2 min
Sensitivity to urea, μS/mM 700 to 860 1,100 to 1,500
Linear range, μM 10 to 1,000 2 to 700
Limit of urea detection, μM 5 to 10 1 to 2
Reproducibility of responses during working day (RSD) 3% to 8% 2% to 4%
Reproducibility of biosensor preparation (RSD of responses of different biosensors) 12% to 15% 20% to 25%