Water Quality Meter & Kit Interchangeable probes Water Quality Meter - 850081 Using interchangeable, plug and play probes, this versatile meter reads pH, mV, ORP, conductivity, salinity, TDS, DO and temperature. Order probes only for parameters currently required, and add additional probes in the future. The back-lit display simultaneously reads temperature in user selectable °C & °F. All measurements are automatically temperature compensated and DO measurements can be compensated for salinity and altitude as well. Automatic calibration recognition of pH buffers 4, 7 and 10. Also features auto power off, hold, min/max, fold-out easel back and a tripod screw. Comes with 9V battery and hard-shell, foam-lined carrying case with room for one or two probes. PROBES NOT INCLUDED. EPA Equivalency Method: 360.1 and Alpha Method 2580.1992. Dim: 7" x 2¾" x 2" (177 x 68 x 45 mm). Weight: 16 oz (489 g). Water Quality Meter pH Kit - 850086 Includes everything needed for immediate field use as a pH meter: Water Quality Meter 850081, pH Probe 840016; ATC Temperature Probe 840038; instructions, pH buffers 4, 7 & 10, deionized water; and a 9V battery. All of these are contained in a hard-shell, foam-lined carrying case. EPA Equivalency Method: 360.1 and Alpha Method 2580.1992. Kit Dim: 11" x 9½" x 2" (279 x 241 x 51 mm).