. pH :
Combined electrodes, separated electrodes, unbreakable electrodes, micro-electrodes
. REDOX :
Platinium electrodes, silver electrodes combined or not
. CONDUCTIVITY :
Cells with two plates of platinium with or without Pt 100 temperature probe
. DISSOLVED OXYGEN :
Sonde of Clarck with compensation of température
. TEMPERATURE :
Platinium resistance probe 100 ohms at 0° C
