Water Quality

HOBO water quality monitoring solutions include loggers for measuring conductivity, salinity, pH, dissolved oxygen, and more – in lakes, streams, rivers, estuaries, and coastal waters.

HOBO Loggers are built to last and withstand a wide range of environmental conditions including temperature extremes, rushing rocky streams and ocean storms. Award-winning HOBO water monitoring data loggers provide years of reliable, accurate performance.

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HOBO MX800 Series Water Data Logger

Achieve superior monitoring accuracy with HOBO MX800 Series Multiparameter Loggers. Seamlessly integrate with interchangeable sensors to measure water parameters effectively. Choose from submersible or direct read models for hassle-free data retrieval. Enhance environmental data collection with precision and ease through seamless integration.

$0.00 (ex gst)

HOBO MX2501 - pH and Temperature Bluetooth Data Logger

The new low-cost HOBO® MX2501 pH and Temperature logger is designed for long-term monitoring of pH in estuaries, lakes, streams, rivers, and oceans.

$1,877.00 (ex gst)

HOBO U24 - Conductivity/Salinity (Fresh Water) Data Logger

Measures and records conductivity and temperature in streams, lakes, and other freshwater sources; recommended for monitoring aquifers for saltwater intrusion and road and agricultural runoff.

$2,241.00 (ex gst)

HOBO U24 - Conductivity/Salinity (Salt Water) Data Logger

The HOBO U24-002-C is a cost-effective data logger for measuring salinity, conductivity and temperature in saltwater environments with relatively small changes in salinity (±5,000 μS/cm) such as saltwater bays, or to detect salinity events such as upwelling, rainstorm, and discharge events.

$2,241.00 (ex gst)

HOBO U26 - Dissolved Oxygen Data Logger

The HOBO U26 Dissolved Oxygen Logger is a highly precise, low-cost data logger for measuring concentrations of oxygen in lakes, streams, rivers, estuaries, and coastal waters. Used by aquatic biologists, hydrologists, and other research professionals, the HOBO U26 combines the high accuracy, robust performance of industry-leading RDO® Basic (Rugged Dissolved Oxygen) sensor technology with an easy-to-maintain design.

$3,174.00 (ex gst)

HOBO MX2201 Pendant - Water Temperature Bluetooth Data Logger

A waterproof logger enabled with Bluetooth wireless access to deliver accurate temperature measurements straight to your mobile device or Windows computer using our HOBOconnect app.

$158.00 (ex gst)

HOBO MX2202 Pendant - Water Temperature/Light Bluetooth Data Logger

A waterproof temperature/light-level logger equipped with the power of Bluetooth to deliver accurate data straight to your mobile device or Windows computer using our free HOBOconnect app.

$187.00 (ex gst)

HOBO MX2203 TidbiT - Water Temperature 400' Bluetooth Data Logger

The HOBO MX2203 TidbiT water temperature logger leverages the power of Bluetooth Low Energy (BLE) to deliver high-accuracy temperature measurements straight to your iOS or Android mobile device.

$326.00 (ex gst)

HOBO MX2204 TidbiT - Water Temperature 5000' Bluetooth Data Logger

The HOBO MX2204 TidbiT water temperature logger leverages the power of Bluetooth Low Energy (BLE) to deliver high-accuracy temperature measurements straight to your iOS or Android mobile device.

$347.00 (ex gst)

HOBO MX2205 TidbiT - Water Temperature w/- External Sensor Bluetooth Data Logger

A waterproof data logger with both an internal sensor and an external sensor that’s designed for monitoring fast-changing temperatures; can be deployed just above water or soil, for the most convenient wireless data download to your mobile device or laptop.

$376.00 (ex gst)

Water Quality Kit

Monitor water temperature, pH levels, dissolved oxygen, ORP or conductivity with ease!

$0.00 (ex gst)

HOBO MicroRX Water Level / Flow Kit

The HOBO MicroRX Water Level Station is a cellular, web-enabled water level monitoring solution for stormwater, floodwater, irrigation, hydrologic, and environmental applications

$0.00 (ex gst)

pHionics STs - Conductivity Sensor with 4-20mA output

The pHionics STs Series™ Conductivity is a water quality sensor designed to pair with a datalogger or RTU for real-time data capture.

$2,760.00 (ex gst)

pHionics STs - DO (Dissolved Oxygen) Sensor with 4-20mA

The pHionics STs Series™ Dissolved Oxygen sensor accurately measures dissolved oxygen (0-20 mg/L or percent saturation) and temperature (0-50°C) over long periods of time with little maintenance required.

$3,072.00 (ex gst)

pHionics STs - ORP (Redox) Sensor with 4-20mA output

The pHionics STs Series™ ORP sensor provides reliable ORP (redox) and temperature measurements to a datalogger, RTU, PLC, or SCADA system for continuous water quality monitoring.

$2,352.00 (ex gst)

pHionics STs - pH Sensor with 4-20mA output

The pHionics STs Series™ pH sensor provides accurate pH and temperature measurements from 0-14pH to a datalogger or RTU for continuous water quality monitoring.

$2,232.00 (ex gst)

HOBO Pendant - Temperature/Light Data Logger (64K)

A miniature two-channel temperature and relative light level data logger, this 64K model is waterproof and value-priced for deployment in indoor, outdoor, and underwater applications measuring relative light levels and ambient temperatures.

$221.00 (ex gst)