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CONTENTS
INTRODUCTION . . . . . . . . . . . . . . . . . . . . . . . .2
FEATURES . . . . . . . . . . . . . . . . . . . . . . . . . . . . .3
MATERIALS SUPPLIED . . . . . . . . . . . . . . . . . .3
FRONT PANEL DESCRIPTION . . . . . . . . . . . .4
LCD DISPLAY . . . . . . . . . . . . . . . . . . . . . . . . . . .4
CALIBRATION . . . . . . . . . . . . . . . . . . . . . . . . . .5
MEASUREMENT PROCEDURES . . . . . . . . . .7
TROUBLESHOOTING . . . . . . . . . . . . . . . . . . .11
ERROR CODES . . . . . . . . . . . . . . . . . . . . . . . .12
BATTERY INSTALLATION
AND REPLACEMENT . . . . . . . . . . . . . . . . . . .12
CARE AND MAINTENANCE . . . . . . . . . . . . . .14
SPECIFICATIONS . . . . . . . . . . . . . . . . . . . . . .15
WARRANTY . . . . . . . . . . . . . . . . . . . . . . . . . . .16
INTRODUCTION
This Sper Scientific Test Tube pH Pen
(Model 850062/ 850063) is designed for easy
calibration and simple, accurate measurement.
The 12 cm long probe is capable of testing
samples even in narrow-mouthed containers.
The waterproof meter provides one-button,
three-point calibration with customizable
calibration values. Other features include
a data-hold function, automatic shutoff and
low-battery indicator. Model 850063 also
measures temperature and provides automatic
temperature compensation.
