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Mettler Toledo™ EL20 Benchtop pH Meter for Teaching and Learning

Compact instrument tailored for training courses in colleges and universities

Manufacturer: mettler toledo™  51302930

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Catalog No. 01-915-671

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Description & Specifications


Includes Meter, operating instructions, quick guide, power adapter
Range (pH) 0 to 14
Resolution (pH) 0.01
Accuracy (pH) ±0.01
Range (mV) 0 to 1999mV
Resolution (mV) 1mV
Accuracy (mV) ±1mV
Calibration Points (pH) 1 or 2
Resolution (Temperature) 0.1°C
Accuracy (Temperature) ±0.5°C
Display Type LCD
Inputs BNC for pH combination or half cell, 2mm banana socket for separate reference half cell, Cinch/RCA jack for ATC probe (NTC 30kilohm)
Outputs 2mm Banana socket for analog output
Probe Type NTC
Weight (Metric) 0.6kg
Detection Range 0 to 14pH
Electrical Requirements 100/240V 50/60Hz adapter for 9V DC input
For Use With (Application) pH, mV, Temperature
Hertz 50/60Hz adapter for 9V DC input
Height (English) 2.1 in.
Length (Metric) 20cm
Material ABS/PC Reinforced Window, Membrane Keypad
Temperature Range (English) -32° to +212°F
Temperature Range (Metric) -0° to +100°C
Voltage 100/240V
Weight (English) 1.3 lb.
Width (Metric) 17.5cm

Versatile benchtop meter helps make learning and teaching easy

  • Large LCD shows measured value and temperature simultaneously
  • 5-button membrane keypad makes operation easy
  • Press CAL to calibrate, with automatic buffer recognition; press READ to begin measurement
  • Measures pH, mV and temperature
  • Helpful icons inform you of electrode condition, measurement progress and reading stability (with automatic endpoint recognition)
  • Laminated Quick Guide outline operation at a glance

Variety of inputs and outputs

  • BNC input for combination or half-cell electrode
  • Reference input for separate reference half cell
  • Accepts redox electrode for oxidation-reduction measurements
  • ATC input for NTC 30kilohm probe
  • Analog output for transmission of graphical plots of reading to an optional chart recorder
Durable housing, universal power supply
  • Rugged ABS housing
  • PC-reinforced window
  • Tough membrane keypad
  • 100 to 240V 50/60Hz power supply provides 9VDC to instrument