The 8000 pH meter with interchangeable pH electrode is a quality, UK manufactured, easy to read, general purpose pH meter with LCD display. The unit comes supplied complete with an interchangeable combination electrode, so that old electrodes can simply be removed and replaced. The pH range is 0 to 14 pH, with a resolution of 0.01 pH and an accuracy of ?0.05 pH, and pH readings are manually temperature compensated over the range of 0 to 60 ?C (default 25 ?C).At the touch of a button, the instrument will automatically re-calibrate itself when used in conjunction with pH buffer solutions, and the unit will power off automatically after ten minutes, maximising battery life.? pH range 0 to 14 pH x 0.01 pH? Accuracy ?0.05pH? Clear LCD display? Easy to use re-calibration feature? ABS antimicrobial case? Operating Temperature 0?C to 50?C? Power 3 x AAA batteries? Battery life 5000 hours? Dimensions 25 x 56 x 128mm? 2-year guarantee (meter only)