RC-50 / RS-50 Star 2001 Series
Works only on RC-50 and RS-50 models or with the CFL-39 complete flow cell assembly. Screws into the special black tee as seen in CFL-39 and in CLF-40 in the flow cell chamber section. Clear 360 degree viewing of electrodes for monitoring purposes. Easy to unscrew with no tools or Teflon tape required!