Fisher Scientific accumet AR50 User Manual page 10

Getting Started
If both a conventional
electrode and an AccuFET
electrode are connected to
the meter, do not put them
in a solution together
because you will get
inaccurate measurements.
Do not discard the BNC
shorting cap.
10
pH and ION SPECIFIC ELECTRODES
This meter allows you to use two types of pH electrodes: the
conventional glass pH electrode and the AccuFET field effect
transistor (FET) pH electrode. If both types of pH electrodes are
connected, the meter will read the AccuFET electrode. This meter
also allows you to use ion specific electrodes.
1
Carefully remove the protective cover from
the end of the electrode. Before first using
your glass pH electrode, or whenever the
electrode is dry, soak it 2-4 hours in an
electrode storage solution, pH 4 Buffer, or
KCl solution. Before using your ion specific
electrode, consult the manufacturer's
instructions for electrode preparation.
2
Remove the shorting cap on BNC connector.
Connect the combination pH electrode by
plugging it into the BNC input connector
(twisting to lock in place).
If a combination electrode isn't used, connect
the indicating pH electrode into the BNC
input connector. Plug the reference electrode
into the reference pin jack. Also, install the ATC
probe into the ATC jack.
Note: Be sure to connect all probes to the
appropriate channel connectors (for
example: Input 1, Ref 1, and ATC 1).
Option: Connect the optional AccuFET
electrode by plugging it into the FET jack
on the back meter panel. Allow the AccuFET
to warm up five minutes before use.
Connect ion specific electrodes in the same
manner as pH electrodes.
®
accumet
R E S E A R C H