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Ohaus ST300-B Portable EC/pH Meter with IP54 Sets | Cambridge Environmental

SKU: ST300-B~ea

SKU: ST300-B~ea

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This rugged yet portable pH meter offers convenience and dependability in one compact design.  With a meter stand, wrist strap for secure field use and IP54 housing, Starter 300 is perfect to measure pH and oxidation-reduction potential (ORP).   


Product features:

  • Automatic and manual temperature allowance provides accurate readings and a 30-measurement library saves data for future reference
  • The auto buffer detection stores calibration data and helps to avoid errors during the calibration process
  • ORP or temperature electrode connectivity for additional functionality
  • IP54 protection shields water/dust damage


Measurement Range 0.00 – 14.00 pH;  -1999 – 1999 mV;  0 – 100 °C
Accuracy ±0.01 pH;  ±1 mV;  ±0.5 °C
Measurement Resolution 0.01 pH;  1 mV;  0.1 °C
Display LCD
Electrode ST320 (Available as an accessory)
Accuracy ± (mV) 1 mV
Battery Life 500 Hours with Disposable Batteries
Calibration 3 Point
Dimensions (HxLxW) 1.38 in x 6.69 in x 3.54 in (35 mm x 170 mm x 90 mm)
In-use cover No
Measurement Range (Temperature) 0 °C – 100 °C
Measurement Range -1,999 mV – 1,999 mV
Net Weight 0.35 lb (0.16 kg)
Parameter pH / ORP
pH accuracy (±) 0.01
pH measuring range 0 – 14
pH resolution 0.01
Power 4 AAA (LR03) Batteries (Included)
Resolution (Voltage) 1 mV
Temperature Compensation Yes
Temperature Resolution 0.1 °C
Temperature Sensor 30 KΩ NTC
Working Environment 41°F – 104°F, 80%RH, non-condensing (5°C – 40°C, 80%RH, non-condensing)

Download(s) Available: ST300 Manual
Download(s) Available: Starter Portable Meters Literature