Get high accuracy and premium performance everywhere you need it with the Thermo Scientific™ Orion Star™ A321 pH Portable Meter. This meter is designed for a wide range of pH, mV, ORP and temperature testing and field applications. Evaluate samples in the most demanding locations using this waterproof meter with IP67-rated housing. Perform up to a 5 point pH calibration, log up to 5000 data point sets with time/date stamp and easily transfer calibration and data logs via USB or RS232 to a printer or computer with free downloadable Orion Star™ Com software.

• Measure pH, mV, relative mV or ORP with temperature
• Perform up to a 5 point pH calibration using automatic buffer recognition of NIST or DIN buffer groups with choice to manually enter custom buffer values
• Calibration editing option allows individual points to be fixed without a full recalibration
• Informative, easy-to-read backlit graphic display with clear onscreen instructions simplifies operation
• Capture your critical readings with measurement stability indicator and selectable read modes — Auto-Read holds a stable reading, Continuous shows changing readings with hold option and Timed logs data at specific intervals
• Data log collects and date/time stamps up to 5000 measurement sets with optional sample ID and user ID
• Calibration log stores 10 most recent calibrations
• Non-volatile meter memory ensures your data and settings are protected, even with loss of power
• Orion Star Com software facilitates data transfer to a computer via USB or RS232 connections
• Flexible power options with AA batteries or optional universal power adapter
• IP67-rated housing is waterproof for rugged field operation
• Meter kits include hard-sided field case and protective meter armor with electrode holders, adjustable wrist/belt strap and built-in meter stand
• Meters offer CE, TUV 3-in-1 and FCC Class A certifications
• 3-year replacement warranty

Product Datasheets

Datasheet 1

• STARA3215.pdf