[. . . ] [. . . ] 0 to 14 pH x 0. 01 pH GENERAL DESCRIPTIONS ± 0. 07 pH ( pH5 to pH 9) ± 0. 1 pH ( pH 4 to pH 10) ± 0. 2 pH ( pH 1 to pH 3. 9, pH 10. 1 to pH 13) * Main instrument only. pH 4. 0 buffer solution, pH 7. 0 buffer solution. Input Impedance PH range Temp. Operating Humidity Calibration Knob Power Supply Power Consumption Dimension Weight pH electrode (Optional) Standard Accessories Optional Accessories * AQUARIUMS * BEVERAGE * FISH HATCHERIES * PAPER INDUSTRY * PLATING INDUSTRY * QUALITY CONTROL APPLICATIONS * FOOD PROCESSING * PHOTOGRAPHY * LABORATORY * SCHOOLS & COLLEGES * SWIMMING POOLS * WATER CONDITIONING pH ELECTRODE PE-03 pH ELECTRODE PE-11 pH ELECTRODE PE-01 SPEAR TIP PH ELECTRODE Model : PE-04HD BUFFER SOLUTION PH-07 BUFFER SOLUTION PH-04 Carrying case General purpose pH electrode with BNC conector. The " Spear Tip pH electrode " is perfect for those pH measurements in applications where sample piercing is required. [. . . ] [. . . ]