Sper Scientific LUCL-2006 Chlorine Meter - Manual (Page 14)

* Press " CAL Button " ( 3-5, Fig. 1 ) once, the
Display will show following text with flashing ( approx.
10 seconds ).
flashing
CAL
0.0 ppm
Then the Display will show :
1.00
CAL ppm
Now the meter is finished the " Zero Chlorine "
calibration procedures and ready for " 1.00 ppm "
calibration procedures.
5) 1.00 ppm calibration
Refer to page 12, when finish the " Zero Chlorine "
calibration procedures and the Display show
1.00
CAL ppm
The meter is ready for " 1.0 ppm " calibration.
12