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GENERAL INTRODUCTION .............................................................................................. 3
INITIAL INSPECTION ......................................................................................................... 3
USING THE pH/ORP 220 ................................................................................................... 4
a. Mounting procedure............................................................................................ 4
b. Front panel ............................................................................................................ 6
c. LCD screen ............................................................................................................ 9
d. Rear connectors .................................................................................................. 12
e. Measure mode .................................................................................................... 14
f. Setting mode ....................................................................................................... 16
g. pH calibration mode ......................................................................................... 23