APCI Capillary Electrode, API 4000, API 5000, 4500 Back Catalog number: CTS-21102 Availability: In the manufacturer's stock Price on request - + Recommended MW402 TDS meter MW402 Price on request MW102 µp-based ATC pH/Temp meter MW102 Price on request CD611 Conductivity tester with ATC, 0 - 20000 µS/cm Price on request