Xylem ISE Electrodes Cu 60 - Handbuch (Seite 18)

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concerning sample preparation and measuring
procedures, SI Analytics provides a large number of
application reports for various applications.
Response times
The response time depends on the concentration range.
It is:
•
several seconds with high concentrations,
•
several minutes near the detection limit.
The measured value is stable if the value does not
change by more than 0.1 mV within 30 seconds.
Interferences
• Complexes with acetate, citrate, ammonia, amino
acids, EDTA etc.
• Mercury and silver ions poison the membrane.
• The membrane is photosensitive concerning the
setting of the potential.
• Interfering ions: no disturbances with the following
conditions: