Table 1.

System specification.

Specification
Electrode	ITO glass (CE: Ag, RE: Ag/AgCl)
Technique	Chronoamperometry, Chronocoulometry
Channel	1–4 ch
Potential range	±1.1 V
Potential step	10 mV
Sampling interval	10–1000 msec
Sampling count	100–3000
Current resolution	0.4 nA
Size	3.25 × 5.9 × 0.9 cm
Weight	35 g
Power supply	Li-polyer 120 mAh
Display	PC, Tablet PC