ST300-G Starter 300 PH Portable Meter from Ohaus

Ohaus 30219114

After more than a century of perfecting the art of measurement through our durable weighing products, OHAUS precision is now available in the form of a portable pH meter. This portable meter offers convenience, reliability and durability in one compact design.


pH, oxidation-reduction potential (ORP) measurement


Liquid crystal display (LCD)


4 AAA batteries (included)




ABS housing, wrist strap

Design Features

Automatic and manual temperature compensation, auto buffer recognition, calibration icon


Measurement Range: 0.00 – 14.00 pH; -1999 – 1999 mV; 0 – 100 °C; ±0.01 pH; ±1 mV; ±0.5 °C

Measurement Resolution: 0.01 pH; 1 mV; 0.1 °C

Display: LCD

Electrode: ST320 (Included)

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: Automatic

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)

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