Hanna Instruments HI 4221 - Manual (Page 31)

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pH Resolution
Accessing this option, the desired pH resolution can be set, with one (x.x), two (x.xx) or three (x.xxx) decimals.
To set the pH Resolution:
• Press
while in pH Measure mode.
• Press .
• Use or to select the pH Resolution option.
• Press and use or to highlight the
desired option.
• Press to confirm your selection or press to
cancel operation.