Hach-Lange HQD - Sodium (Na+) Ion Selective Electrode ISENa - Manual (Page 11)

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6. If prompted, enter a name for the new method settings. Additional changes made to
the settings of an existing method are automatically saved with the same method
name.
7. Push EXIT until the meter returns to the measurement mode.
Change check standard options
1. Make sure an electrode is connected to the meter.
2. Push the METER OPTIONS key and select (ISENa381) Settings.
3. Select Modify Current Settings.
4. Select Calibration Options.
5. Update the settings. Refer to Table 5 .
Table 4 Custom buffer sets
Buffer set values Options Description
Std1
Std2
Std3
Std4
Std5
10.0 mg/L
Pre-set temperature compensated standard values. 100.0 mg/L
1000.0 mg/L
2299.0 mg/L (0.1 M NaCl)
Custom
Custom standard value. Custom standard values are not
temperature compensated.
No standard Standard is undefined when this option is selected.
Table 5 Check standard options settings
Settings Options Description
Standard
10.0 mg/L
100.0 mg/L (default)
1000.0 mg/L
0.1 M NaCl
Custom
Value for check standard.
Standard value will appear on Check
Standards Options screen.
Check Standard reminder
Reminder: On or Off (default)
Allow Defer:Yes
Meter automatically displays check
standard screen if reminder is on.
Measurement of check standard can be
delayed if set to Yes.
Acceptance criteria
Acceptance Limits: 1% to 20%
Cal Expires on Failure:Yes or No
Values that check standard must fall within
in order to pass.
Calibration expires if check standard fails.