Manual

18
reduce your variation from factory setting by pressing or .
6. Press to accept the new value. The pH Zero Calibration
 
exit by pressing any measurement key.
b. 
Important: Always calibrate or verify your Ultrameter II    
buffer solution before adjusting the gain with acid or base buffers, i.e., 4


will verify that a buffer is in the sensor well by displaying either “Acd” or
“bAS”.
1. The pH calibration mode is initiated by either completion of the
 
key twice while in pH measurement mode.
 CAL”, “BUFFER” and “Acd” or “bAS”
 
NOTE: If the “Acd” and “bAS” indicators are blinking, the unit is indicating
an error and needs either an acid or base solution present in the sensor
well .
 
 
  or until display agrees with buffer value.
Figure 7
BUFFER
pH
CAL
Figure 8
pH
BUFFER
CAL