Mettler-Toledo LE420 pH electrode made of glass with sliding PTFE sleeve; electrolyte refillable

The movable ground-joint diaphragm can be cleaned easily and thoroughly and allows the reference electrolyte to be replaced without difficulty. With movable PTFE shaft, Ag/AgCl reference system, 3 mol/l KCl electrolyte, glass shaft 120 mm, diameter 12 mm, 1.0 m cable, BNC