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Figure 32 Segmented—Piece-point Linear Representation
100%
80%
60%
40%
20%
(0, y )
1
0
0
If the standards used for the TOC
added calibration are analyzed after
the calibration online, the TOC
reported will be offset by the
reagent water blank.
UVTOCOperation.fm
only reflect the calculation based on the most recent calibration point
measured and the multipoint zero.
Segmented
When this option is selected, the multi-point zero and the non zero multi-point
standards will be used to calculate the TOC using a piece point linear
representation. See
(x , y )
4
(x , y )
3
3
(x , y )
2
2
40%
20%
TOC added
If the standards used for the TOC added calibration are analyzed after the
calibration online, the TOC reported will be offset by the reagent water blank.
When this option is selected, the multi-point zero is not used. Only the non
zero TOC calibration points are used to calculate the best-fit straight line
calibration. See
This line is used to calculate the reagent water blank and its associated ppm
CO
value. A TOC added calibration is useful when calibrating a low range
2
analyzer when the unknown carbon impurity in the DI water is significant.
Fitted
When this option is selected the multi-point zero and the multi-point
TOC standards will be used to calculate the TOC using the best-fit
straight-line calibration. See
See Safety Note 32 on page
(x , y )
6
6
(x , y )
5
5
4
60%
80%
TOC µg/L or mg/L
Figure
33.
Figure
34.
Section 6
103.
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Calibration Menu
Page 103
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