TIS Capillary Electrode, API 2000, QTRAP Back Catalog number: CTS-21212 Availability: In the manufacturer's stock Price on request - + Recommended PH55 pH/Temp waterproof tester, -2.0 to 16.0 pH Price on request MI806 Portable meter pH/EC/TDS/Temp Mi806 Price on request MI306 Automatic combined EC/TDS/NaCl/Temp meter Mi306 Price on request