• pH measurement range: 0 to 14pH
• pH measurement accuracy: +/- 0.01pH
• Temperature measurement range: 32 to 194°F (0 to 90°C)
• Temperature measurement accuracy: +/- 1.8°F/1°C
• Calibration: 1, 2, or 3-point

The Triplett Model PH180 Waterproof (IP57) PH Pen measures from 0 to 14 pH with 0.01pH resolution and has flat surface electrode that can measure solids, semi-solids, and liquids.It simultaneously displays pH and Temperature and has an analog bargraph for viewing trends. It features ATC (Automatic Temperature Control) that compensates for temperature changes, 1-, 2-, or 3-point calibration, a CAL reminder after 15 on/off cycles, and a RENEW warning when the probe needs cleaning or replacement. Auto power off (after 10 minutes) with disable conserves battery life.