Water Quality Management
Track pH, conductivity, dissolved oxygen, and more!
For more than 25 years, Onset’s HOBO data loggers have set the standard for reliable, and accurate water quality monitoring.
- Quick and simple deployment
- Rugged design for harsh environments
- Easy setup and analysis with HOBO software
- Models available for easy, wireless data offload with a mobile device
Monitoring Wetlands with Data Loggers: PDF Download
Choosing A Conductivity Data Logger: PDF Download
8301 - Portable Conductivity Meter
The AZ 8301 Portable Conductivity Meter can measure the conductivity and temperature of the water being tested, and the device has a big LCD screen for multiple parameters display, and the conductivit..
84051 - pH/COND./SALT/TDS/DO Meter
The AZ 84051Combo Water Meter can measure multiple parameters, namely pH conductivity, salinity, TDS, and dissolved oxygen by changing to the appropriate probe...
8551 - ORP Meter
The AZ 8551 ORP Meter can measure the oxidation-reduction potential value from -1999mV to +1999mV, which can be used widely in water quality testing applications...
8552 - ORP Pen
The AZ 8552 ORP Pen can measure the oxidation-reduction potential value from -999mV to 999mV...
8601 - pH Meter
The AZ 8601 pH Measuring Device can measure the pH as well as oxidation-reduction potential (mV), which can be used widely in the water quality testing applications...
86501 - Digital Benchtop Water Quality Meter
The AZ 86501 Digital Benchtop Meter measures the pH and mV and displays data on a big LCD screen, which could be a multi-display. There is a built-in drawer that could allow users to store testing dat..
8651 - ORP & pH Meter
The AZ 8651 ORP & pH Meter can measure the pH and oxidation-reduction potential value, which can be used in various water quality testing applications...
8680 - pH Testing Pen
The AZ 8680 pH Pen has an IP65 environmental rating and can measure pH values of 2~12 in various water quality testing applications...
KIT-S-U20-0x - HOBO Water Level Data Logger Starter Kit (Available In 4 Depths)
R13,336.31
Combining high accuracy water level measurements with out-of-the-box convenience, this money-saving kit includes everything needed to start logging right away. It is ideal for monitoring water levels ..
MX2201 - Water Temperature Data Logger
R1,122.19
The HOBO MX2201 waterproof temperature logger leverages the power of Bluetooth Low Energy (BLE) to deliver accurate temperature measurements straight to your iOS or Android mobile device with the HOBO..
MX2202 - Temperature & Light Level Data Logger (30m depth)
R1,433.90
The HOBO MX2202 waterproof temperature and light level logger leverages the power of Bluetooth Low Energy (BLE) to deliver accurate temperature and light-level measurements straight to your iOS or And..
MX2203 - TidbiT Water Temperature Data Logger (120m depth)
R2,680.77
The HOBO MX2203 TidbiT waterproof temperature logger leverages the power of Bluetooth Low Energy (BLE) to deliver high-accuracy temperature measurements straight to your iOS or Android mobile device u..
MX2204 - TidbiT (150m depth) Temperature Data Logger
R2,888.59
The HOBO MX2204 TidbiT waterproof temperature logger leverages the power of Bluetooth Low Energy (BLE) to deliver high-accuracy temperature measurements straight to your iOS or Android mobile device. ..
MX2500-CAL-BKR - MX2500 Calibration Beaker
R106.51
This is a replacement O-ring for the MX2203. For more information visit Onset..
MX2500-ELECTRODE - MX2500 Replacement Electrode
R3,061.97
With its gel electrolyte and double Pellon® junction minimizing the chance of contamination of the reference electrolyte, this plastic-bodied electrode and the HOBO MX2501 pH and Temperature Data Logg..
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MX2501 - Bluetooth Temperature & pH Data Logger
R15,345.59
The HOBO MX2501 pH and Temperature Data Logger is designed for long-term monitoring of pH in estuaries, lakes, streams, rivers, and oceans. Leveraging Bluetooth Low Energy® (BLE) technology, the MX250..