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BATTERY REPLACEMENT:
When the battery becomes weak the
meter will display the low battery
indicator " ".
When this appears, only a few hours
of battery life remain. A low battery will
result in unreliable measurements.
Prompt battery replacement is required.
Battery replacement must take place
in a non-hazardous area using an
alkaline 9V battery.
Turn the meter off, slide the battery
compartment cover located at the rear
of the meter off and replace the 9V
battery with a new one. Make sure
the battery contacts are fully engaged
in the connector, seat the battery in its
compartment and replace the cover.
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OPTIONAL ACCESSORIES:
MA9070 Zero Oxygen calibration solution, 220 mL
MA9071 Refilling Electrolyte solution, 220 mL
MA841 Spare membrane, 5 pcs
MA840 D.O. probe