Paul N. Gardner Co. Inc. offers its RX-I series Digital Refractometers featuring touch-screen technology. The series complies with Hazard Analysis & Critical Control Points, Good Manufacturing Practice and Good Laboratory Practices standards, the company says. Four measurement modes are available: Mode-1 is for maximum accuracy and displays the measurement value once the sample reaches target temperature; Mode-2 is for fast results and measures refractive index and temperature at fixed intervals and displays the estimated measurement value at target temperature; Mode-S is for emulsion samples and displays the measurement value once a certain level of sample stability is achieved; and Mode-3 is for no temperature control, which provides an option to turn the thermo-module off. Without temperature control, the measurement value is displayed 4 seconds after the start key is pressed, the company says.