Xylem ISE Electrodes CN 60 - Handbuch (Seite 15)

15
Interferences
• Complexes with Ni
2+
, Cd
2+
, Cu
2+
• Strong reducing agents
• Interfering ions: 10 % error with the following ratios of
concentration:
(Ratio of concentration = Interfering ion / Measuring ion)
Aging
Please note that every electrode undergoes a natural
aging process. The response time increases and the
slope decreases with the age of the electrode. The
following factors shorten the lifetime considerably:
• Incorrect storing
• Special measuring conditions (e.g. organic solutions,
frequent measuring with high concentrations of
interfering ions)
• High temperatures
• High changes in temperature
The warranty does not cover damage caused by
measuring conditions and mechanical damage.