pH, ORP, Conductivity, DO & Ion Electrodes

Apera's general-purpose pH electrodes include the 201 series. The 201T-F combines pH and temperature for automatic temperature compensation, with a proprietary lithium glass membrane for quick, stable readings, a ceramic and fibre junction that resists clogging, and gel KCl electrolyte that needs no refilling. The 203DJ in-line electrodes use a Swiss double ceramic junction and lead-free lithium glass for long-term, unattended monitoring. The 301Pt ORP electrode uses a platinum ring sensor for general water solutions and wastewater treatment.

Conductivity electrodes come in three cell constants: K=1 for the regular range, as the 2301 with Apera's brush-resistant platinum black sensor (0 to 200 mS/cm) or the glass-body 2401; K=10 for high ranges; and K=0.1 for pure water. For dissolved oxygen there are the DO500 polarographic electrode and the DO803 luminescent optical probe, and the IndSen 2071M ion-selective electrodes measure potassium and ammonium — the ammonium version from 0.18 to 9,000 mg/L, sealed to IP67. Electrodes are offered with BNC, BNC/RCA or 8-pin connectors to suit Apera's meters.