33 / 73
Ref. No. [UMCES] CBL 2015-014
ACT VS15-07
33
Figure 14.
Time series of pH measured detected by the Xylem EXO-pH1 instrument deployed during the
1 month MLML field trial.
Top Panel
: Continuous pH
Total
recordings from instrument (blue line) and
pH
Total
of adjacent grab samples determined by mCP dye (red circles).
Bottom Panel
: Difference in
measured pH relative to reference samples (Instrument – Dye Ref) observed during deployment. Zero
offset is represented by dashed line as pH
Total
scale is reported by both the EXO-pH1 sensor and the dye
reference method.