| Additional information | |
|---|---|
| RBR Solo Tu | Parameter(s): Turbidity |
| RBR Solo ODO | Parameter(s): Temperature, Dissolved Oxygen |
| RBR Solo chl-a | Parameter(s): Chlorophyll-a |
| RBR Solo T | Parameter(s): Temperature |
| RBR Solo tide32 | Parameter(s): Tidal averaging |
| RBR Solo wave32 | Parameter(s): Tidal averaging, intermittent and continuous wave burst |
| RBR Solo D | Parameter(s): Pressure |
RBR Solo | Compact Single-Parameter Loggers
Compact underwater loggers for measuring temperature, depth and water quality, with flexible options for long deployments.
Whether you’re tracking temperature changes or monitoring oxygen levels, RBR Solo helps you collect the data you need without adding bulk to your deployment. Choose from dedicated temperature, pressure and water quality loggers, with specialist options for tides, waves and deep-water research.
Now in their fourth generation, these compact loggers combine low power consumption with storage for billions of readings. Standard AA batteries, USB-C download and Ruskin software make preparation and data retrieval straightforward. Choose your parameter below to find a logger that fits your study.
Turbidity | RBR Solo Tu
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Follow changes in water clarity with RBR Solo Tu. From sediment movement to changing conditions around coastal works, its optical measurements help you track when water becomes more or less turbid.
Key features
- Turbidity measurement range of 0–1500FTU.
- Calibrated range of 0–1000FTU.
- Detection limit of 0.005FTU.
- Two AA batteries.
- Depth options up to 1700m or 6000m depending on configuration.
An optical backscatter option is available for monitoring higher turbidity levels.
Dissolved oxygen and temperature | RBR Solo ODO

Understand how oxygen availability changes alongside water temperature with RBR Solo ODO. Recording both helps you investigate changing conditions in aquatic habitats and build a clearer picture of water quality over time.
Key features
- Records dissolved oxygen and temperature.
- Outputs oxygen concentration and percentage saturation.
- Oxygen measurement range of 0–1000µmol/L, calibrated over 0–500µmol/L.
- Sampling up to 1Hz, with standard, fast and slow sensor response options.
- Two AA batteries, with depth options up to 1700m or 6000m depending on configuration.
Chlorophyll-a | RBR Solo chl-a

Monitor changes in chlorophyll-a fluorescence to help investigate phytoplankton activity. RBR Solo chl-a provides a compact way to follow changes over time or compare readings through the water column.
Key features
- Optical chlorophyll-a fluorescence measurement.
- Calibrated range of 0–50µg/L.
- Measurement range of 0–500µg/L.
- Two AA batteries.
- Depth options up to 1700m or 6000m depending on configuration.
Temperature | RBR Solo T
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Track subtle temperature changes over long deployments with RBR Solo T. Its compact size makes it easy to fit into moorings, profiling equipment and towed arrays, while low power consumption supports extended monitoring between battery changes.
Key features
- Temperature accuracy of ±0.002°C.
- Standard measurement range of -5°C to 35°C, with wider ranges available on request.
- Sampling up to 2Hz as standard, or 32Hz with the fast option.
- Depth rating up to 1700m, with titanium deep variants rated to 10,000m.
- One AA battery, with a two-battery option for double the deployment endurance.
Tides | RBR Solo tide32
Track tidal water-level changes with RBR Solo tide32. By averaging pressure readings over a chosen period, it reduces the influence of short-term fluctuations and helps you see the underlying tidal pattern.
Key features
- Pressure sampling up to 32Hz in tide mode.
- Adjustable averaging duration from one second to 24 hours.
- Flexible intervals to suit your monitoring schedule.
- Choice of pressure ranges to match the deployment.
- Optional two-battery configuration for longer deployments.
Waves | RBR Solo wave32
Study wave conditions and short-lived events such as boat wakes with RBR Solo wave32. Intermittent or continuous bursts of pressure readings support analysis of wave height, period and energy, alongside tidal water levels.
Key features
- Sampling up to 32Hz.
- Intermittent and continuous wave bursts.
- Configurable bursts from 512 to 32,768 samples.
- Tidal averaging included.
- Optional two-battery configuration for longer deployments.
Wave measurements are recommended at deployment depths below 100m. We can help you choose a suitable pressure range and sampling schedule for your site.
Pressure and depth | RBR Solo D

Measure changes in water level or track pressure during a profile with RBR Solo D. A choice of pressure ranges lets you match the logger to your deployment, from shallow-water monitoring to deep-ocean research.
Key features
- Pressure accuracy of ±0.01% full scale, or ±0.05% for the 20dbar sensor.
- Sampling up to 2Hz as standard, or 32Hz with the fast option.
- Standard configurations for depths up to 1000m.
- Titanium deep variants for deployments down to 10,000m.
- Optional two-battery configuration for double the deployment endurance.
A separate barometric variant records atmospheric pressure for correcting water-level datasets in RBR Ruskin or RSKtools.
Need help choosing? Get in touch and we’ll help find the right product for you.
Related video
| Additional information | |
|---|---|
| RBR Solo Tu | Parameter(s): Turbidity |
| RBR Solo ODO | Parameter(s): Temperature, Dissolved Oxygen |
| RBR Solo chl-a | Parameter(s): Chlorophyll-a |
| RBR Solo T | Parameter(s): Temperature |
| RBR Solo tide32 | Parameter(s): Tidal averaging |
| RBR Solo wave32 | Parameter(s): Tidal averaging, intermittent and continuous wave burst |
| RBR Solo D | Parameter(s): Pressure |

