Spare Parts Kit (1 Year) contains one fluoride electrode (100029), one reference electrode (100031), with one 2-oz. bottle internal filling solution, five 2-oz. bottles reference electrode filling solution (150071), one set sample inlet screens and removal tool (212856-S01), one set pump seals for reagent and sample pump (212857-A01), one set fuses (212858-S01), two grommet and O-ring kits (2 x 212859-S01), four check valves (4 x 203278-001), and one carbon filter (170020).