pH55 (pH/Temp waterproof tester Mi5559 Back Catalog number: MI5559 Manufacturer: MILWAUKEE ELECTRONICS Availability: In the manufacturer's stock Price on request - + Recommended HI98127 pH tester pHep® 4 Price on request PH58 pH/ORP/Temp waterproof tester, -2.00 to 16.00 pH Price on request HI2002-02 EDGE pH/ORP metr Price on request