Pool line orp controller and dosing pump with HI-20053 orp p

Hub DS

HI-5321/CERT Professional benchtop Conductivity/TDS meter

HI-5001 pH 1.00 Technical Calibration Buffer (500 mL)

HI-4430B/3 Gel Filled ORP Electrode with Gold Contact

HI-4211T ORP Au pin, plastic (PEI) body, screw cap S7 ( PG13.5)

copy of HI-6493005 AMPHEL® ORP ELECTRODE WITH REPLACEABLE BATTERY

HI-1285-9 GroLine pH/EC/TDS/Temperature probe

HI-1005/10 Amplified pH electrode with Matching Pin and Pt100 with 10mt cable