LaMotte Tracer pH Meter - Manual (Page 14)

14
Problem Cause Action
Erratic LCD
display Samples have low ionic
strength (lack salt);
e.g. distilled, deionized,
boiled, lake water (high
pressure) For each 50 mL of sample add
1 drop (50 mL) of saturated
Potassium Chloride (KCl). No
alteration in pH will occur by
inert KCl.
Unexpected
readings Buffers Calibrate with fresh buffers
Buffers Calibrate with buffers that
bracket sample pH
Display frozen HOLD function Press MODE/HOLD or turn
meter off
Button response Remove batteries press ON/OFF
button for 3 seconds. Reinsert
batteries (stored data will be
lost)
Steady “-1 ”
display Wait Reading not stable yet
EXPAND YOUR TRACER
Interchangeable electrodes are available to convert the pH TRACER to a Total
Chlorine TRACER or an ORP TRACER.
Remember to ask for instructions and appropriate reagents or buffer tablets
when ordering the Total Chlorine or ORP electrodes.
Total Chlorine TRACER Electrode,
0.0-10.0 ppm Code 1732
The Total Chlorine TRACER
Electrode (Code 1732) requires the
use of TRACER TCL Tablets. Order
Code 7044-J (100 pack).
ORP TRACER Electrode, ±999 mV Code 1734
The ORP TRACER Electrode (Code
1734) requires an initial soaking in a
pH 4.0 buffer solution. Order pH 4.0
Mini Buffer Tablets/100 pack (Code
3893-J).