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pH Meters

pH Meters

Instruments used to measure the acidity and alkalinity of water, other liquids, and solutions; the difference in voltage between pH-sensitive glass electrodes and reference electrodes is converted into pH units based on the Nernst equation.
Benchtop pH Meters (3)

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1

Thermo Scientific™ Orion Star™ A211 Benchtop pH Meter
BIOPHARMA

Reliably measure pH, mV, ORP and temperature with our benchtop pH meter for advanced lab analysis and printer or computer interfacing.

Memory Non-volatile memory preserves data log, calibration log and meter settings
Resolution (pH) 0.001, 0.01, 0.1
Languages English, Spanish, French, Italian, German and Chinese; Portuguese and Korean Available with Software Update
Measurement Modes pH,mV,Relative mV,ORP with Temperature
Range (pH) -2 to 20
Channels 1
Accuracy (pH) ±0.002
Power Supply Universal AC adapter (included) or 4 AA batteries (sold separately)
Battery Life 800 hr.
Data Management Details Transfer single, range or all data points to printer or computer
Display Type LCD, Graphic with Backlight
Resolution (mV) 0.1mV
Data Points 2000 with Date and Time Stamp
Certifications/Compliance CE, TUV 3-1, FCC Class A
Temperature Probe Calibration 1 point temperature offset calibration
Inputs BNC (pH or ORP electrode), pin-tip (reference electrode), 8 pin MiniDIN (ATC temperature probe), stirrer input (stirrer probe)
Accuracy (Temperature) ±0.1°C
Weight (Metric) 0.9 kg
Accuracy (mV) ±0.2 or ±0.05%, whichever is greater
Stability Selectable fast, medium, slow or Smart Stability setting; Selectable off or Automatic Smart averaging setting
Temperature (English) Operating 41°F to 113°F (ambient)
Isopotential Point 7.000pH
AC Adapter Universal 50-60 Hz, 100-240 VAC power adapter (Cat. No. 1010003)
Log Function Type Automatic with Auto-Read and Timed Read Modes, Manual with Continuous Read Mode
Calibration pH with calibration editing option, relative mV, ORP and temperature
Battery Type 4 x AA (sold separately)
Relative Humidity Range 5 to 85%, non-condensing
Calibration Points 1 to 5
Alarm Output High/low limit alarm, calibration due alarm
IP Rating IP-54
Temperature Selection Manual or automatic with ATC temperature probe
Keypad Comprehensive with menu-specific function keys and dual purpose scroll/shortcut keys
Model Orion Star A211 pH/mV/RmV/ORP/Temperature Benchtop Meter
Outputs USB, RS-232
Range (Relative mV) ±2000.0mV
Backlight Option Yes, selectable
Temperature Range (English) 22.0°F to 221.0°F
Weight (English) 2 lb.
Resolution (Temperature) 0.1°C, 0.1°F
Temperature (Metric) Operating 5°C to 45°C (ambient)
Temperature Range (Metric) -5°C to +105°C
Methods 10 per channel with password protection
Range (ORP) ±2000.0mV
2

Thermo Scientific™ Orion™ Versa Star Pro™ Benchtop pH Meter
BIOPHARMA

Get premium performance and ultimate flexibility with our benchtop pH meter for pH, mV, ORP and temperature measurements on customizable color display.

Power Rating DC input: 9VDC, 1A
Memory Non-volatile memory preserves data log, calibration log and meter settings
Resolution (pH) 0.001, 0.01, 0.1
Languages English, Spanish, French, Italian, German, Chinese, Portuguese and Korean
Measurement Modes pH,mV,Relative mV,ORP with Temperature
Range (pH) -2 to 20
Channels 4 - customizable with modules
Accuracy (pH) ±0.002
Power Supply Universal AC adapter (included)
Data Management Details Transfer single, range or all data points to printer or computer
Display Type LCD, Color Graphic with User-Customizable Options
Resolution (mV) 0.1mV
Data Points 2000 with Date and Time Stamp
Certifications/Compliance CE, TUV 3-1, FCC Class A
Temperature Probe Calibration 1 point temperature offset calibration
Inputs BNC (pH or ORP electrode), pin-tip (reference electrode), 8 pin MiniDIN (ATC temperature probe), two stirrer inputs (stirrer probe)
Accuracy (Temperature) ±0.1°C
Weight (Metric) 1.2 kg, modules add 0.2 kg each
Accuracy (mV) ±0.2 or ±0.05%, whichever is greater
Stability Selectable fast, medium, slow or Smart Stability setting; Selectable off or Automatic Smart averaging setting
Temperature (English) Operating 41°F to 113°F (ambient)
Isopotential Point 7.000pH (adjustable)
AC Adapter Universal 50-60 Hz, 100-240 VAC power adapter (Cat. No. STARA-PWR)
Log Function Type Automatic with Auto-Read, Timed and Single Shot Measure Modes; Manual
Calibration pH with calibration editing option, relative mV, ORP and temperature
Relative Humidity Range 5 to 85%, non-condensing
Calibration Points 1 to 6
Alarm Output Set point alarm, high/low limit alarm, calibration due alarm
IP Rating IP-54
Temperature Selection Manual or automatic with ATC temperature probe
Keypad Numeric with menu-specific function keys and dual purpose scroll/shortcut keys
Outputs USB, RS-232
Range (Relative mV) ±2000.0mV
Backlight Option Yes
Temperature Range (English) 22.0°F to 221.0°F
Weight (English) 2.5 lb., modules add 0.5 lb. each
Resolution (Temperature) 0.1°C, 0.1°F
Temperature (Metric) Operating 5°C to 45°C (ambient)
Temperature Range (Metric) -5°C to +105°C
Methods 10 per channel
Range (ORP) ±2000.0mV