APCI Capillary Electrode, API 4000, API 5000, 4500 Back Catalog number: CTS-21102 Availability: In the manufacturer's stock Price on request - + Recommended MW150 pH/ORP/Temp Bench Meter, -2.00-20.00 pH, ±2000.0mV, -20.0-120.0 °C Price on request MI105 Portable meter Mi105 Price on request HI 98308 Water Purity Tester, 0.0 to 99.9mS/cm Price on request