pH 2100 Benchtop Meter from Oakton Instruments

pH 2100 Benchtop Meter

Excellent pH resolution and accuracy: up to 0.001 pH and ±0.002 pH, plus ion concentration mode!


Two line, dot matrix display provides clear instructions for setup and calibration
Ion concentration mode offers direct display of ion readings in ppm, ppt, % or any other units of your choice
RS-232 output: sends data to printer or PC on programmed time intervals, when reading is stable, or manually
Calculates and displays slope/offset of electrode automatically; check electrode quality and conform to standard test method quality checks
Calibration alarm signals when meter needs recalibration—user-defined interval ensures regularly scheduled recalibration
Real-time clock stamps stored and calibration data with date and time—suitable for GLP documentation

Use the pH 2100 meter to document large volumes of critical ISE, pH or mV data sets. Large dot matrix display shows pH, ion or mV reading plus temperature (°C). Meter sends measurements to a printer or PC with the touch of a button, or on timed intervals. Free software allows you to download data to your computer in a format easy to import into spreadsheet programs.

Customize up to five pH calibration points, or select from four standard buffer sets. Meter displays last calibration date and time.

Meter features a built-in clock with timer and alarm. Other features include memory of up to 50 readings with date and time, selectable manual or Automatic Temperature Compensation (ATC), analog recorder output and a selectable "Ready" function.

Detachable electrode holder arm holds electrodes firmly in place. Includes instruction card that stores underneath meter for quick reference. 110/220 VAC.

pH, mV, Relative mV, Ion, C, F
pH Range
0.000 to 14.000 pH
pH Resolution
0.001/0.01 pH
pH Accuracy
0.002/0.01 pH
pH Calibration
Up to 5 customizable calibration points, or USA, NIST, Bf1, or BF2 standard buffer sets
mV Range
1850.0 mV
mV Resolution
0.1 mV
mV Accuracy
0.2 mV
mV Calibration
offset up to 150 mV
Ion Range
0.000 to 19900
Ion Resolution
least significant digit
Ion Accuracy
0.5% of the reading
Temperature Range
-5 to 105C/23 to 221F
Temperature Resolution
0.1C or F
Temperature Accuracy
0.3C / 0.5F
Temperature Calibration
offset up to ±5.0°C/±9.0°F
up to 100 readings with date and time
9" x 7" x 2.4" (23 x 18 x 6 cm)
Shipping Weight
3.0 lb (1.4 kg)

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