APCI Capillary Electrode, API 4000, API 5000, 4500 Back Catalog number: CTS-21102 Availability: In the manufacturer's stock Price on request - + Recommended CD611 Conductivity tester with ATC, 0 - 20000 µS/cm Price on request HI 98308 Water Purity Tester, 0.0 to 99.9mS/cm Price on request MI805 Portable meter pH/EC/TDS/Temp Mi805 Price on request