Take simple, routine pH, mV and temperature measurements with the Thermo Scientific™ Orion Star™ A121 Portable pH Meter. This meter is an easy-to-use and budget-friendly instrument for basic pH analysis in the field. Perform up to a 3 point pH calibration with easy recall of calibration points and slope. Quickly navigate setup menus and ensure consistent calibrations using the simple keypad layout and on-screen text prompts. This waterproof meter has an IP67-rated housing for rugged protection in outdoor environments.

• Measure pH, mV or relative mV with temperature
• Perform up to a 3 point pH calibration with automatic buffer recognition or manual buffer entry
• Simplified, easy-to-read display shows main measurement with temperature, stability indicator and electrode condition icon
• User-friendly operation with basic calibration text prompts
• Easily recall calibration data for procedure checks
• Non-volatile memory preserves 50 point internal data log and meter settings, even with loss of power
• 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

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Product Datasheets

Datasheet 1

• STARA2215.pdf