

Ref. No. [UMCES] CBL 2017-050
ACT VS17-05
13
Lab Concentration Range Challenge
Figure 1.
Top Panel:
Plot
of instrument (blue dots) and reference (red dots) measurements of NO
3
in the
laboratory concentration range challenge covering ambient plus 6 concentration ranges. Five replicate
measurements were made at each concentration level along with three measurements at ambient level.
Bottom Panel:
Plot of the absolute difference in mgN/L between Real-NO3 and reference measurement.