Intended Use
The Docu-pH
Meter
is a meter for measur-
ing pH/mV and temperature. The fol-
lowing measuring ranges are covered:
– pH range: -2.000 to 20.000 
– mV measuring range: -2,000 to +2,000 
– Temperature range: –5 to +105C°
The pH meters simplify and speed up 
routine procedures thanks to their:
– Automatic electrode recognition
– Simple operation
– Rugged and sturdy construction
– Easy to calibrate with 1, 2 or 3 calibra-
tion points
– Automatic buffer recognition
– Automatic electrode test during calibra-
tion
– Automatic temperature compensation
– Clear readout with easy-to-understand
symbols and LCD
– Intuitive menu controls with plain-lan-
guage instructions via LCD and softkeys
– Electrode operation with DocuClip
®
: 
Previous calibrations are traceable
– Docu-pH
+
Meter
: Serial interface for data
transfer to PC or printer
– Docu-pH
+
Meter
: 
Data storage capacity: 500 datasets
Symbols
The following symbols are used in
these instructions:
§ indicates required steps
$ indicates required steps, but only 
under certain conditions
> describes what happens after you
perform a certain step
– indicates an item in a list
! indicates a hazard
Conventions Used in This Operation
Manual
– The pictures in this Operation Manual
are based on the “Docu-pH
Meter
”
model. On the other models, some
display readouts and printouts may
differ slightly from the ones shown. 
Any differences that impact opera-
tion of the meter will be explained.
Hotline for Technical Applications
Advice 
Phone: +49.551.308.4440
Fax: +49.551.308.4449
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