What is the shelf life and operating life of an ISE?
ELIT Ion Selective Electrodes are exceedingly robust and durable. The shelf life of a new unused solid-state ISE is many years – providing that the protective cap is kept in place to limit any atmospheric corrosion. They are guaranteed for six months during normal operation, but in practice have been found to last much longer than this. In the Nico2000 test laboratory some electrodes have been used intermittently for several years with no deterioration in their performance. The gel-filled reference electrodes, however, cannot be expected to last as long. But with careful use and attention to keeping the frit moistened with filling solution when not in use, some of these have also given useful service for several years.
