pH Meters

In pH meters, the difference in voltage between pH-sensitive glass electrodes and reference electrodes is converted into pH units based on the Nernst equation. These instruments include pH meters used to measure the acidity and alkalinity of water, other liquids, and solutions.
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Product Category

Brand

Range (pH)

Temperature Range (Metric)

Calibration

Measurement Modes

Calibration Points

Application

Resolution (pH)

Accuracy (pH)

Outputs

Log Function Type

Accuracy (Temperature)

Accuracy (mV)

Backlight Option

Data Management Details

Data Points

Display Type

Range (mV)

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Checker pH Meter with screw-type, epoxy-body electrode Thermo Scientific™

This Thermo Scientific brand product was originally part of the Alfa Aesar product portfolio. Some documentation and label information may refer to the legacy brand. The original Alfa Aesar product / item code or SKU reference has not changed as a part of the brand transition to Thermo Scientific.

Orion™ Versa Star Pro™ pH/LogR™ Benchtop Meter Thermo Scientific™

Get high accuracy, premium performance and ultimate flexibility with the Thermo Scientific™ Orion™ Versa Star Pro™ pH/LogR™ Benchtop Meter. Meet your most challenging applications for pH, mV, ORP and LogR temperature.

Orion Star™ A111 Benchtop pH Meter Thermo Scientific™

Take simple, routine pH, mV and temperature measurements with the Thermo Scientific™ Orion Star™ A111 Benchtop pH Meter. This meter is an easy-to-use and budget-friendly instrument for basic pH analysis in the lab.

Orion Star™ A221 Portable pH Meter Thermo Scientific™

Record accurate and reliable pH, mV, ORP and temperature measurements with the Thermo Scientific™ Orion Star™ A221 Portable pH Meter. This meter is ideal for a wide range of applications and advanced pH analysis in the field.

Orion™ Versa Star Pro™ Benchtop pH Meter Thermo Scientific™

Get high accuracy, premium performance and ultimate flexibility with the Thermo Scientific™ Orion™ Versa Star Pro™ Benchtop pH Meter. Meet your most challenging applications for pH, mV, ORP and temperature.

Elite ORP Pocket Testers and Replacement Sensors Thermo Scientific™

Benefit from these pocket-sized testers. Thermo Scientific™ Elite testers are designed to provide on-the-go measurements for a variety of applications including homebrew beer and wine, food and beverage, hydroponics, aquaculture and aquariums, agriculture, pools and spas, environmental monitoring,...

Orion Star™ A121 Portable pH Meter Thermo Scientific™

Take simple, routine pH, mV and temperature measurements with the Thermo Scientific™ Orion Star™ A121 Portable pH Meter. This meter is an easy-to-use and budget-friendly instrument for basic pH analysis in the field.

Orion Star™ A211 Benchtop pH Meter Thermo Scientific™

Record accurate and reliable pH, mV, ORP and temperature measurements with the Thermo Scientific™ Orion Star™ A211 Benchtop pH Meter. This meter is ideal for a wide range of applications and advanced pH analysis in the lab.

Elite pH Pocket Testers and Replacement Sensors Thermo Scientific™

Benefit from these pocket-sized testers. Thermo Scientific™ Elite testers are designed to provide on-the-go measurements for a variety of applications including homebrew beer and wine, food and beverage, hydroponics, aquaculture and aquariums, agriculture, pools and spas, environmental monitoring,...

Waterproof pH Meter Thermo Scientific™

This Thermo Scientific brand product was originally part of the Alfa Aesar product portfolio. Some documentation and label information may refer to the legacy brand. The original Alfa Aesar product / item code or SKU reference has not changed as a part of the brand transition to Thermo Scientific.