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.

Showing 3 models
Ohaus

St300

SKU: oh-83033961
$603.00
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Ohaus

St300-B

SKU: oh-83033962
$451.00
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Ohaus

St300-G

SKU: oh-30219114
$631.00
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Starter 300 Ph Portable St300 Specifications

Accuracy ±0.5 °C; ±1 mV; ±0.01 pH
Accuracy ± (mV) 1 mV
Auxiliary Display Model LCD
Battery Life 500 Hours with Disposable Batteries
Internal Calibration 3 Point
Electrode ST320 (Included)
In Use Cover No
Measurement Range -1,999 mV ; 1,999 mV
Measurement Range (Temperature) 0 °C ; 100 °C
Measurement Resolution 0.1 °C; 0.01 pH; 1 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
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)
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Starter 300 Ph Portable St300-B Specifications

Accuracy ±0.5 °C; ±1 mV; ±0.01 pH
Accuracy ± (mV) 1 mV
Auxiliary Display Model LCD
Battery Life 500 Hours with Disposable Batteries
Internal Calibration 3 Point
Electrode ST320 (Available as an accessory)
In Use Cover No
Measurement Range -1,999 mV ; 1,999 mV
Measurement Range (Temperature) 0 °C ; 100 °C
Measurement Resolution 0.1 °C; 0.01 pH; 1 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
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)
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Starter 300 Ph Portable St300-G Specifications

Accuracy ±0.01 pH; ±1 mV; ±0.5 °C
Accuracy ± (mV) 1 mV
Accuracy (Temperature) 0.5 °C
Auxiliary Display Model LCD
Battery Life 500 Hours with Disposable Batteries
Internal Calibration 3 Point
Electrode ST320 (Included)
In Use Cover No
Measurement Range -1,999 mV - 1,999 mV
Measurement Range (Temperature) 0 °C - 100 °C
Measurement Resolution 0.01 pH; 1 mV; 0.1 °C
Net Weight 0.35 lb (0.16 kg)
Parameter pH / ORP
pH accuracy (±) 0.01
pH measuring range 0 - 14
pH resolution 0.01
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)