LAQUA U-54
HORIBA LAQUA U-54 Multi-Parameter Water Quality Checker
The HORIBA LAQUA U-54 is a professional multi-parameter water quality monitoring instrument designed for comprehensive field analysis of surface water, groundwater, wastewater, aquaculture systems, and industrial water processes. As part of the U-50 Series, the U-54 simultaneously measures up to 11 water quality parameters, including ISO 7027-compliant turbidity, providing reliable and accurate results in demanding environmental conditions. Its rugged waterproof construction, automatic calibration, and advanced data logging capabilities make it an ideal solution for environmental professionals and researchers.
Key Features
- Simultaneous measurement of up to 11 parameters
- Integrated multi-sensor probe with replaceable sensors
- ISO 7027-compliant turbidity measurement
- Automatic one-touch calibration
- Real-time monitoring and Auto-Hold function
- Large backlit LCD display
- USB communication for data transfer
- Stores up to 10,000 measurement records
- Waterproof and impact-resistant field design
- Optional water depth measurement capability
- User-replaceable sensors for simplified maintenance
Measured Parameters
- pH
- pH (mV)
- ORP (Oxidation Reduction Potential)
- Dissolved Oxygen (DO)
- Conductivity
- Salinity
- Total Dissolved Solids (TDS)
- Seawater Specific Gravity
- Temperature
- Turbidity (ISO 7027 Infrared Method)
- Water Depth (optional)
Description
Measured Parameters
- pH
- pH (mV)
- ORP (Oxidation Reduction Potential)
- Dissolved Oxygen (DO)
- Conductivity
- Salinity
- Total Dissolved Solids (TDS)
- Seawater Specific Gravity
- Temperature
- Turbidity (ISO 7027 Infrared Method)
- Water Depth (optional)
Technical Specifications
| Parameter | Specification |
|---|---|
| pH Range | 0.00 – 14.00 pH |
| pH Resolution | 0.01 pH |
| ORP Range | -2000 to +2000 mV |
| Dissolved Oxygen Range | 0.00 – 50.0 mg/L |
| Conductivity Range | 0 – 10 S/m (0 – 100 mS/cm) |
| Salinity Range | 0 – 70 ppt |
| TDS Range | 0 – 100 g/L |
| Turbidity Range | 0 – 800 NTU |
| Temperature Range | -10°C to 55°C |
| Data Storage | 10,000 records |
| Communication | USB |
| Power Supply | 4 × C-size batteries |
| Battery Life | Approx. 70 hours |
| Maximum Measurement Depth | Up to 30 m |
| Probe Diameter | Approx. 96 mm |
| Probe Length | Approx. 340 mm |
| Probe Weight | Approx. 1.8 kg |
| Waterproof Rating | IP68 (Probe), IP67 (Control Unit) |
Applications
- Environmental water quality monitoring
- Groundwater investigations
- Wastewater treatment facilities
- Aquaculture and fisheries
- Reservoir and lake studies
- Drinking water source monitoring
- Industrial water process control
- Research and academic institutions






