Hanna Instruments hi 98103 User Manual

Checker

Checker

Checker

Checker

®

®

®

®

OPERATION:
• Do not be alarmed if white crys-

tals appear around the cap. This
is normal with pH electrodes
and they dissolve when rinsed
with water.

• If the electrode is dry, soak it in

tap water for a few minutes,
prior to use.

• Connect the electrode to the

meter.

• Switch the 

Checker

®

 on.

• Remove the protective cap and

immerse the tip of the elec-
trode (bottom 4cm/1½") into
your sample.

• Stir gently and wait until the

display stabilizes.

• For best results, recalibrate pe-

riodically.

• NEVER IMMERSE THE ELEC-

TRODE UP TO THE CONNEC-
TOR. ALWAYS KEEP THE CON-
NECTOR CLEAN AND DRY.

• After use, rinse the electrode

with water to minimize contam-
ination.

• Store the electrode

with a few drops of
HI 70300 Storage
Solution in the protec-
tive cap.

• DO NOT USE DISTILLED OR

DEIONIZED WATER FOR
STORAGE PURPOSES.

• Always replace the protective

cap after use.

Manual two points

combination stick pH
electrode

Checker

®

  1

:

Checker

®

 2

:

Checker

®

 3

:

0 to 50ºC (32 to 122ºF);
95% RH max.

2 x 1.4V alkaline

approx. 3,000 hours
of continuous use

66 x 50 x 25 mm
(2.6 x 2 x 1")

Weight  (meter)

70 g (2.5 oz.)

INITIAL PREPARATION:
The pH electrode is shipped dry.
Prior to using the 

Checker

®

, re-

move the protective cap and con-
dition the electrode by soaking
the tip (bottom 4 cm/1½") in
pH 7.01 buffer solution for a
couple of hours. Then follow the
calibration procedure below.

0.00 to 14.00 pH

0.01 pH

±0.2 pH

±0.1 pH

Checker

®

  1

:

with  HI 1270 screw-type pH

electrode

Checker

®

 2

:

with  HI 1207 screw-type pH

electrode

Checker

®

 3

:

with  HI 1208 BNC-type elec-

trode

pH

HI 70300