In-Situ pH Sensor User Manual
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Information subject to change without notice. In-Situ, In-Situ logo, Baro Merge, BaroTROLL, HERMIT, RDO, Pocket-Situ, RuggedCable, RuggedReader, TROLL, and Win-Situ are
trademarks or registered trademarks of In-Situ Inc. © 2011. All rights reserved.
For more information, contact In-Situ Inc.
221 East Lincoln Avenue, Fort Collins, CO 80524
1-800-446-7488 (toll-free in U.S. & Canada)
1-970-498-1500 (international & domestic)
www.in-situ.com
0059512 rev. 003 04/12
Storage Recommendations
Prior to using the pH sensor after long-term storage, rinse the sensor with DI water and then soak it in pH 4 buffer
for 1 or 2 hours. This will saturate the glass bulb with hydrogen ions and prepare it for use.
Do not store the pH sensor in DI water because it will deplete the reference solution and drastically reduce the life
of the sensor.
Replacement Parts
Reference Filling Solution (60 mL)................................................................................................................................................0056900
pH Calibration Kit (1 L each pH 4, pH 7, pH 10, DI water)......................................................................................................0032080
Quick Cal (4 x 250 mL).......................................................................................................................................................................0033250
Reference Junction Kit (3 junctions, 60 mL reference filling solution...............................................................................0059620
Storage Solution (500 mL)................................................................................................................................................................0065370
Specifications
Type:
Glass sensing bulb with Ag/AgCl reference half-cell, replaceable single junction,
replaceable
reference
filling
solution
Range:
0 to 12 pH units
Pressure Rating:
211 m (692 ft)
Accuracy:
± 0.1 pH unit
Resolution:
0.01 pH unit
Operating Temperature:
0 to 50° C (32 to 122° F)