IWW, of Santa Barbara, Calif., introduces the OAKTON Instruments’ new Double Junction pHTestrs and PHTestr Kits for measuring pH from -1.0 to 15.0. The Double Junction technology protects the electrode from contamination via organic material, heavy metals, sulfides and more. With the most advanced sensor technology, these instruments offer the lowest long-term cost of ownership due to the long electrode life and replaceable electrodes.