The Triplett Model PH180 Waterproof (IP57) PH Pen measures from 0 to 14 pH with 0.01 pH 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-point， 2-point 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. Includes meter with flat surface pH probe with protective cap， 4 CR2032 batteries， cup with cap and neckstrap.

Flat surface electrode can measure solids， semi-solids and liquids

Measures from 0 to 14 pH with 0.01 pH resolution

ATC (Automatic Temperature Control) compensates for temperature changes

Dual display for pH and temperature

Analog bargraph for viewing trends

1-， 2- or 3-point calibration

CAL reminder after 15 on/off cycles

RENEW warning when probe needs cleaning or replacement

Auto power off (after 10-minutes) with disable

Waterproof (IP57)