Hach IntelliCAL ISENH3181 Series User Manual page 13

Follow the applicable storage procedure:
• Short-term and mid-term (maximum one week) storage—Put the ammonia probe with the
installed membrane module in a 1000 mg/L NH
Adjustor (ISA). Do not let the membrane dry out. A soaker bottle is not necessary. Put a cover on
the storage beaker and probe body to prevent solution evaporation.
• Long-term (more than one week) storage—Remove the membrane module and soak the probe
in pH Electrode Storage Solution. Refer to
Note: After long-term storage, soak the probe (with the installed membrane module) in a 1000 mg/L NH
standard solution without Ionic Strength Adjustor (ISA) for 30 to 60 minutes for the best stabilization speed.
Figure 3 Long-term storage
—N standard solution without Ionic Strength
3
Figure 3.
—N
3
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