Performance Verification Statement for the JFE AROUSB AND AROW-USB Dissolved Oxygen Sensors

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Ref. No. [UMCES] CBL 2016-010
ACT VS16-01
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Figure M. Response of JFE AroW-USB (sn 0181) to changing dissolved oxygen concentrations at 15.4 oC and S=0.00.
Top Panel: Time series of instrument readings and Winkler reference samples drawn at level of sensor foil in well-mixed
test tanks. The deviations in instrument signal under high DO exposure likely reflects bubble contamination of DO sensor
foil. Bottom Panel: Corresponding offset between instrument reading and Winkler DO reference sample during the trial.
Dotted line represents zero offset from reference. Offsets beyond 2 mg/L are excluded as likely due to bubble interference.