Enhanced capabilities for improved accuracy, additional security, increased datalog capabilities, temperature calibrations, and more! Improved stability algorithm increases calibration and measurement accuracy Ensure temperature accuracy by performing the ATC temperature calibration Increased memory allows you to log more data points or turn off the data log if desired Print or view your last 10 calibrations New individual method passwords provide better security Star series portable meters feature simple three-button operation with convenient Quick-Start guides to help you get started and provide support while in use. Smart Stability™ and Smart Averaging™ automatically optimize the measurement process to ensure accurate results. Meters offer a full complement of GLP-related features including datalogging with time/date stamp, electrode verification, and optional 21 CFR Part 11 software. Return Policy Items are sold as-is with no returns or refunds available unless explicitly stated.