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Ref. No. [UMCES] CBL 2015-014
ACT VS15-07
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During the brackish water trials, salinity was maintained to within 0.11 units (range =
21.75 to 21.86) with an average of 21.80 and temperature was maintained to within 0.7
o
C for
each set point (Fig. 7 top). The first temperature trial ranged from 9.95 to 10.67
o
C, with an
average of 10.09
o
C, the second temperature trial ranged from 20.02 to 20.40
o
C, with an average
of 20.20
o
C, and the third temperature trial ranged from 30.18 to 30.54
o
C, with an average of
30.43
o
C. Time series results of the EXO-pH1, Metrohm data and reference pH data are shown in
middle panel and the time series of the calculated difference between EXO-pH1 and reference
pH are shown in the bottom panel. The average difference between instrument and reference pH
for the brackish water component was 0.08 ± 0.08, with a total range of -0.05 to 0.18 (N=76).
Time series results of the EXO-pH2, Metrohm data and reference pH data are shown in
figure 8. The time series of the calculated difference between EXO-pH2 and reference pH are
shown in the bottom panel. The average difference between instrument and reference pH for the
brackish water component was 0.09 ± 0.09, with a total range of -0.05 to 0.19 (N=76).
During the freshwater trials, salinity was maintained to within 0.11 units (range = 0.19 to
0.30) with an average of 0.26 and temperature to within 0.9
o
C for each set point (Fig. 9 top).
The first temperature trial ranged from 9.96 to 10.28
o
C, with an average of 10.08
o
C, the second
temperature trial ranged from 20.00 to 20.91
o
C, with an average of 20.22
o
C, and the third
temperature trial ranged from 29.73 to 30.55
o
C, with an average of 30.42
o
C. Time series results
of the EXO-pH1, Metrohm data and reference pH data are shown in middle panel and the time
series of the calculated difference between EXO-pH1 and reference pH are shown in the bottom
panel. The average difference between instrument and reference pH for the freshwater
component was -0.04 ± 0.07, with a total range of -0.13 to 0.20 (N=62).
Time series results of the EXO-pH2, Metrohm data and reference pH data are shown in
figure 10. The time series of the calculated difference between EXO-pH2 and reference pH are
shown in the bottom panel. The average difference between instrument and reference pH for the
freshwater component was -0.06 ± 0.08, with a total range of -0.14 to 0.19 (N=62).