Hach AutoCAT 9000 - Page 97

Free Chlorine
Free Chlorine
50081_Chlorine_Free_Forward.fm Page 95
9. Add 1.0 mL of pH 7.0
Phosphate Buffer Solution.
Press the
CHECK MARK to
confirm and start the timer.
Note: The Phosphate buffer is
added to adjust the sample pH.
The precise amount added is
not crucial for the accuracy or
precision of the analysis.
10. The timer will start and
the reagents will mix for a
short period before titration
begins.
11. Lower the electrode
head onto the beaker rim.
Press the
CHECK MARK
to confirm.
12. The analysis parameters
that have been stored for the
current Sub-ID may be
edited at this time. (Verify
Increment from Table 1,
“Generator Effluent
Condition,” on page 79).
Highlight the appropriate
line and press the
CHECK MARK to change one
of the analysis parameters or
press 1 to confirm.
Note: Any changes made will
become the new default
parameters for this method
Sub-ID.
Note: These Sub-ID
parameters can be edited here
as 'run-time' settings, or from
the Main Menu as described in
Section 3.5.
Note: This step will be skipped
if autoscaling software is
enabled.