Features: pH / mV / Temperature Best value for an IP67-rated waterproof pH meter - Large, three line LCD – View pH or mV measurement with temperature and % slope - Built-in memory function – Stores up to 150 measurements along with temperature - Auto buffer recognition – Automatically identifies USA, NIST or DIN buffer sets for rapid calibration - Power with AA batteries or use optional AC adapter for benchtop measurements - Calibration due alarm – Set a visible reminder when it is time to recalibrate the meter - Selectable º F/ º C – Choose units to best fit your application - Features mV offset – Calibrate to a Redox/ ORP standard or use for pH electrode diagnostics - Ready indicator, manual or automatic measurement hold feature and optional automatic shutoff function - % slope and temperature displayed with each measurement - Built-in stand – Ideal for easy benchtop or long-term use - Wall-mount option – Ideal to save on bench space - Includes innovative Grip-Clip™ – Quickly and easily secures the electrode to your beaker or container - Compatible with pH electrodes having a BNC connector Specifications: pH Range -2.00 to 16.00 pH Resolution 0.01 pH Accuracy ± 0.01 pH Calibration Up to 5 points ( USA & NIST) Up to 6 points ( DIN) mV Range ± 2000 mV Resolution 0.1 mV ± 999.9 mV; 1 mV beyond Accuracy ± 0.2 mV + 2 LSD or + 0.5 % of reading; whichever is greater Calibration ± 200 mV Temperature Range -10.0 to 110.0 º C ( 14.0 to 230.0 º F) Resolution 0.1 º C/ º F Accuracy ± 0.5 º C; ± 0.9 º F Calibration Offset in 0.1 increments, ± 10 º C or ± 18 º F Others Display Three line custom LCD Temperature Compensation Automatic or manual from -10 to 110 º C Memory Stores up to 150 data sets Power Two AA batteries ( included) , > 700 hours continuous use; AC adapter ( optional) Dimensions ( L x W x H) Meter: 7 7/ 8" x 3 1/ 8" x 2 1/ 4" ( 20 x 8.3 x 5.7 cm) Boxed: 9 1/ 8" x 9 1/ 8" x 2 3/ 4" ( 23 x 23 x 7 cm) Weight Meter: 1 lb ( 0.5 kg) Boxed: 1.4 lb ( 0.7 kg)