APCI Capillary Electrode, API 4000, API 5000, 4500 Back Catalog number: CTS-21102 Availability: In the manufacturer's stock Price on request - + Recommended CD97 TDS tester with ATC, range: 1 - 999 ppm Price on request MI805 Portable meter pH/EC/TDS/Temp Mi805 Price on request EC60 EC/TDS/Temp waterproof tester EC60 Price on request