User Manual
DOC022.5
2
.80024
pH Refillable Probe for Low Ionic Strength Samples: Model
PHC28101 or PHC28103
Safety information
Precautionary labels
Read all labels and tags attached to the instrument. Personal injury or damage to the
instrument could occur if not observed. A symbol on the instrument is referenced in the
manual with a precautionary statement.
Electrical equipment marked with this symbol may not be disposed of in European public disposal systems after
12 August of 2005. In conformity with European local and national regulations (EU Directive 2002/96/EC), European
electrical equipment users must now return old or end-of-life equipment to the Producer for disposal at no charge to
the user.
Note: For return for recycling, please contact the equipment producer or supplier for instructions on how to return end-of-life
equipment, producer-supplied electrical accessories, and all auxiliary items for proper disposal.
Specifications
Note: Specifications are subject to change without notice.
Specifications
Details
Probe type
Digital combination probe with refillable double junction reference and built-in
temperature sensor
pH range
pH 0 to 14
pH resolution
User-selectable stabilization time and resolution—Fast: 0.1, Fast: 0.01,
Medium: 0.01, Slow: 0.01 or Slow: 0.001
Slope
-59 mV/pH (90 to 110% at 25 °C per Nernstian theoretical value)
Operating temperature range
0 to 50 °C (32 to 122 °F)
Storage temperature range
5 to 40 °C (41 to 104 °F)
Junction
Open
Reference type
Ag/AgCl
Minimum sample depth
15 mm (0.59 in.)
Dimensions
Diameter: 12 mm (0.47 in.)
Length: 175 mm (6.89 in.)
Cable length: 1 or 3 m (3.28 or 9.84 ft)
Cable connection
M12 digital output and connector compatible with HQd meters
Product overview
The PHC281 series probe is a pH refillable probe made for difficult samples with a built-in
temperature sensor (
Figure 1
). The PHC28101 or PHC28103 probe is available with a
1 or 3 m (3.28 or 9.84 ft) cable and is intended for laboratory use. The pH refillable probe
has a high electrolyte flow rate and a large open junction ideal for difficult samples, such
as Low Ionic Strength (LIS), Ultrapure, dirty samples and samples with high solids
content. The probe is not suitable for use with organic solvents. A 59-mL bottle of 2.44 M
KCl Electrode Filling Solution is included with the probe.
1