
Product Number: E21M005
The Radiometer REF451 Reference Electrode has a glass body, calomel reference system, refillable electrolyte (sat. KCl in inner reservoir), double-junction, and porous pin junctions. The REF451 reference probe is recommended for measurements in challenging samples. The REF451 is a screw cap electrode and requires an external connection cable for connection to a meter.
To meet your analysis needs, Radiometer Analytical reference electrodes are available with a variety of reference systems and liquid junctions. There is a Radiometer electrode for every application.