The Memobase Plus calibration software for pH, oxygen, conductivity and chlorine sensors turns a PC into a calibration laboratory, providing complete traceability of test solutions, sensors, calibrations and measurements. Calibration reports are generated automatically as a PDF document, or as a CSV file that can be exported to Excel or a similar software for further processing. An audit trail, user administration settings and passwords guarantee security. The software is FDA 21 CFR Part 11-compliant. The software is capable of managing four different sensor types simultaneously: pH (glass and ISFET); dissolved oxygen; ORP, conductive and inductive conductivity; and chlorine. The software provides guided, step-by-step instructions for the correct calibration procedure required by each sensor. A Live-Graph function provides visual control during the calibration, enabling appraisal of sensor condition. It also provides full traceability of all testing equipment and reference solutions.