APCI Capillary Electrode, API 4000, API 5000, 4500 Back Catalog number: CTS-21102 Availability: In the manufacturer's stock Price on request - + Recommended MI160 pH/ORP/ISE/Temp combined logging bench meter Mi16 Price on request MW803 pH/EC/TDS/Temp tester MW803 Price on request MI806 Portable meter pH/EC/TDS/Temp Mi806 Price on request