The LUTRON CDPB-03 is a two-pole carbon rod electrode for measuring the conductivity of liquids..
One kit combine PE-03K7 of pH electrode PE-03 and temp. probe TP-07 as a whole unit...
Lutron PE-11 is a pH electrode. General purpose, laboratory and field usage 10 mm dia. x 130...
Lutron PE-03 is a pH electrode. General purpose, laboratory and field usage 12.3 mm dia x 160...