Performance Verification Statement for the In-Situ Troll 9500 pH Sensor

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Ref. No. [UMCES] CBL 2015-011
ACT VS15-04
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A cross-plot of the matched observations is given in figure 13. A linear regression of the
data was highly significant (p<0.001, r2 = 0.95) even though there were only 10 comparative data
points. The slope of the regression was 0.97 with an intercept of 0.32.
Figure 13. HIMB field response plot of the Troll 9500 pH sensor deployed with antifouling copper screen
compared to reference pHTotal samples. Fine dotted line represents 1:1 correspondence, coarse dotted line
represents correspondence predicted based on difference between pHNBS and pHTotal in seawater (pH NBS =
pHTotal + 0.13).