Water Quality Sensors

Hydrolab pH

The Hydrolab pH Sensor is a high accuracy sensor designed for reliable pH measurement in professional water quality monitoring applications. Accurate pH data is critical for assessing water chemistry, biological activity, and environmental compliance, making the Hydrolab pH sensor an essential component of any multiparameter monitoring system.

Factory integrated into the Hydrolab HL4 and Hydrolab HL7 water quality meters, the Hydrolab pH sensor delivers stable and repeatable measurements in rivers, lakes, groundwater, estuaries, and industrial water environments. Its robust construction and proven sensor technology ensure dependable performance in both routine field surveys and long-term unattended deployments.

SENSOR COMPATIBILITY

The Hydrolab pH Sensor is factory integrated into the following Hydrolab water quality meters:

• Hydrolab HL4
• Hydrolab HL7

Factory integration ensures optimal sensor positioning, seamless system communication, and accurate temperature-compensated pH measurements in the field.

TECHNICAL SPECIFICATIONS

The Hydrolab pH Sensor is engineered to provide accurate and stable pH measurements across a wide range of environmental conditions.

Parameters Measured
• pH
• ORP (optional)

Range
0 – 14 pH

Accuracy
+/- 0.2 pH

Resolution
0.01 pH

Operating Temperature
-5°C to +50°C

AVAILABLE MODELS

Integrated Reference Sensor
pH sensor incorporates a refillable pH reference electrode, within the sensor body.

Standard Reference Sensor
pH sensor incorporates a refillable pH reference electrode, using a separate sensor port.

pH/ORP Combination Sensor
pH/ORP combination sensors (integrated or standard) are also available.

WHY MEASURE pH?

Measuring pH is essential for understanding the chemical balance and overall health of aquatic environments. Even small changes in pH can significantly affect biological processes, metal solubility, nutrient availability, and the toxicity of pollutants in water.  Accurate pH measurement is therefore critical for environmental monitoring, regulatory compliance, and scientific research.

The Hydrolab pH Sensor provides reliable, temperature-compensated pH data that allows users to detect water quality changes early and respond with confidence. Whether monitoring natural waterways, groundwater systems, or industrial processes, consistent pH measurement helps ensure data integrity and supports informed decision-making across a wide range of water quality applications.

IMPORTANT

Note:  The Hydrolab pH Sensor is an accessory and cannot be purchased as a standalone product.

The Hydrolab HL4 and HL7 water quality meters are manufactured by Hydrolab and proudly represented by Aqualab Scientific.