User Guide

OPERATION:
• Do not be alarmed if
white crystals appear
around the cap. This is
normal with pH elec-
trodes and they dissolve
if rinsed with water.
• Remove the protective
cap and turn the pHep
®
on.
• Immerse it in the sample
up to the maximum im-
mersion level.
• Stir gently and wait until
the display stabilizes.
• After use, rinse the elec-
trode with water to mini-
mize contamination.
• Store the electrode with
a few drops of storage
(HI 70300) or pH7 (HI
7007) solution in the pro-
tective cap.
• Always replace the pro-
tective cap after use.
DO NOT USE DISTILLED OR DEIONIZED
WATER FOR STORAGE PURPOSES.
• Large differences in pH readings
(±0.5 pH) could be due to lack of
calibration, dry electrode or run-
down batteries.
CALIBRATION:
The calibration procedure is
simple.
• Immerse the tester up to
the maximum level in pH 7
buffer (HI 7007).
HI 70300
pH
pH
HI 7007
pH
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