The meter offers superior, oversized displays with a bright backlight and dynamic stability indicator. The meters conveniently stamp all calibration and stored data with the time and date, meeting GLP requirements. Their nonvolatile memory stores and recalls up to 500 sets of data?simplifying the process of documenting large volumes of measurement. Advanced setup options enable user customization for added flexibility. User can also program data logging intervals for continuous monitoring. Programmable limit alarm sounds off when readings fall out of range. The pH meters have an expanded pH range from -2.000 to 20.000 with improved accuracy of +/- 0.002 pH and a resolution of 0.001 pH. Other models in the series are available to measure ion concentration, conductivity/TDS, pH/conductivity/TDS, and dissolved oxygen.