Radiometer Analytical REF621 Reference Electrode (mercurous sulphate reference, screw cap)

Product #: E21M006
NZD Price (Incl. GST): Contact Hach

Contains mercury. Dispose of according to local, state and federal regulations.

The Radiometer REF621 Reference Electrode has a glass body, mercurous sulfate (Hg/Hg2SO4) reference system, refillable electrolyte (sat. K2SO4), ground joint, and porous pin junction. The REF621 reference probe is recommended for chloride-free measurements. The REF621 is a screw cap electrode and requires an external connection cable for connection to a meter.

  • The right probe for your application.