Testing Getting Started; Changing The Measurement Function - LaMotte PockeTester 1766 User Manual

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TESTING
Getting Started
• Remove the cap from the bottom of the Tracer to expose the pH
electrode, reference junction and conductivity electrodes.
• Before the fi rst use or after storage, soak the electrode in tap water or
pH 4 buffer solution for about 10 minutes.
• Before fi rst use, hold the meter by the top battery compartment
and swiftly tap the back of the meter downward into your palm
(not a hard surface). This assures that the internal electrolyte
moves to the very tip of the electrode. The electrolyte should fi ll
the circular junction window at the tip of the electrode.
• White KCL crystals may be present in the cap or on the electrode.
This is to be expected depending on the length of time in storage.
These crystals will dissolve while soaking the electrode or they can
be rinsed away with tap water.
• For best results calibrate with pH 7 buffer solution fi rst, then calibrate
with the buffer solution closest to the expected pH value of the solution
or material to be tested.
• To preserve the pH electrode life keep the sponge in the protective cap
soaked with tap water or pH 4 buffer solution.
• For best results, calibrate for conductivity with a standard in the
expected range of the sample. For maximum accuracy calibrate from
low conductivity value standards to high value standards.
• When the meter is calibrated for conductivity, salinity or TDS the
meter must be in the conductivity mode. See page 15. For storage see
page 19.

Changing the Measurement Function

The meter can be set to measure Conductivity, pH, Salinity (ppm), TDS
(ppm), or TDS (mg/L). To change the mode:
1. Turn the TRACER on.
2. Press and hold the MODE/HOLD button for 2 seconds. The display
will begin to scroll through the units.
μS or mS (Conductivity)
pH
ppm S or ppt S (Salinity)
ppm or ppt (TDS)
mg/L (TDS)
LaMotte TRACER pH/TDS/Salt PockeTester
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1766 Instruction
TM
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