MD50 Series Photometers

Accurate, reliable single-parameter water testing for field and laboratory use.
The Lovibond® MD50 Series Photometers provide a compact and dependable solution for routine water quality analysis across a wide range of industrial, commercial and environmental applications.
Available in multiple parameter-specific variants, the MD50 Series combines high-precision optical measurement with straightforward operation, allowing users to obtain accurate and reproducible results using an instrument dedicated to their testing requirements.
With guided operation, integrated data storage and a rugged IP67-rated design, the MD50 Series provides a practical solution for water treatment professionals, laboratory technicians and field engineers working across different testing environments.
Accurate and Reproducible Measurements
Reliable water quality monitoring depends on consistent measurements to support effective treatment control and informed operational decisions.
The Lovibond® MD50 Series uses a high-precision optical system to provide accurate and reproducible photometric results, supporting dependable routine water analysis.
Factory-programmed methods simplify measurement procedures, while user calibration and quick-access favourites provide additional flexibility for different testing requirements.
Designed for Straightforward Operation
The MD50 Series is designed to make routine photometric testing simple and efficient, helping users carry out measurements with confidence in both field and laboratory environments.
Its language-independent interface uses clear symbols and on-screen animations to guide users through the measurement process, reducing the need for complicated operating procedures.
Features including One-Time-Zero (OTZ), quick-access favourites and user-defined method programming help streamline regular testing and support consistent operation across different users and locations.
Flexible Data Storage and Connectivity
The Lovibond® MD50 Series combines reliable measurement with practical data management features, allowing test results to be recorded, transferred and incorporated into routine reporting processes.
With storage for up to 100 results, including date and time information, the instrument helps users maintain organised measurement records as part of regular water quality monitoring.
NFC connectivity enables wireless data transfer to the AquaLX® App, while USB connectivity and CSV export provide additional options for transferring results to a computer for documentation and further analysis.
Robust and Portable Design
The MD50 Series combines a compact handheld format with durable construction, making it suitable for regular testing across industrial, laboratory and field-based environments.
Its IP67-rated enclosure provides protection against dust and water ingress, while protective rubber side panels improve handling and help protect the instrument during everyday use.
Integrated anti-slip feet provide additional stability when testing on a laboratory bench or work surface, allowing the MD50 to be used comfortably in both portable and stationary testing environments.

Dedicated Testing for Different Applications
The Lovibond® MD50 Series is available in a selection of parameter-specific variants, allowing users to choose an instrument suited to their individual water testing requirements.
Depending on the model selected, the range can support applications including boiler water monitoring, cooling water treatment, drinking water analysis, wastewater treatment and disinfection control.
This dedicated approach provides a practical alternative to multi-parameter photometers for users who regularly measure a specific parameter and require straightforward, reliable testing.
Supporting Effective Water Quality Monitoring
Regular water testing provides essential information for monitoring treatment performance, identifying changing water conditions and maintaining effective control of water systems.
By combining precise optical measurement, guided operation and practical data management, the Lovibond® MD50 Series provides a dependable solution for routine single-parameter water analysis.
With its compact design, rugged construction and straightforward testing procedures, the MD50 Series supports consistent water quality monitoring across a wide range of field and laboratory applications.

| Order Code | Parameter | Test Parameter | Measuring Range |
|---|---|---|---|
| 280100 | MD50 Chlorine, tablet reagents | Chlorine HR 2 PP Chlorine HR T Chlorine L Chlorine PP Chlorine T | 0.1 - 10 mg/L Cl2 0.1 - 10 mg/L Cl2 0.02 - 4 mg/L Cl2 0.02 - 2 mg/L Cl2 0.02 - 6 mg/L Cl2 |
| 280102 | MD50 Chlorine Liquid | Chlorine HR 2 PP Chlorine HR T Chlorine L Chlorine PP Chlorine T | 0.1 - 10 mg/L Cl2 0.1 - 10 mg/L Cl2 0.02 - 4 mg/L Cl2 0.02 - 2 mg/L Cl2 0.02 - 6 mg/L Cl2 |
| 280105 | MD50 Chlorine, powder reagent | Chlorine HR 2 PP Chlorine HR T Chlorine L Chlorine PP Chlorine T | 0.1 - 10 mg/L Cl2 0.1 - 10 mg/L Cl2 0.02 - 4 mg/L Cl2 0.02 - 2 mg/L Cl2 0.02 - 6 mg/L Cl2 |
| 280140 | MD50 Chlorine HR (Potassium iodide) | Chlorine HR (KI) T Hypochlorite T | 5 - 200 mg/L Cl2 0.2 - 16 % NaOCl |
| 280120 | MD50 Chlorine dioxide, tablet reagents | Chlorine Dioxide PP Chlorine Dioxide T | 0.04 - 3.8 mg/L ClO2 0.04 - 11 mg/L ClO2 |
| 280125 | MD50 Chlorine dioxide, tablet reagents and powder reagents | Chlorine Dioxide PP Chlorine Dioxide T | 0.04 - 3.8 mg/L ClO2 0.04 - 11 mg/L ClO2 |
| 280180 | MD50 Hazen/A.P.H.A. | Hazen 24 | 10 - 500 mg/L Pt |
| 280130 | MD50 Ozone, tablet reagents | Ozone PP Ozone T | 0.015 - 1.2 mg/L O3 0.02 - 2 mg/L O3 |
| 280135 | MD50 Ozone, powder reagents | Ozone PP Ozone T | 0.015 - 1.2 mg/L O3 0.02 - 2 mg/L O3 |
| 280160 | MD50 Urea | Urea T Urea T | 0.1 - 2.5 mg/L Urea 0.2 - 5 mg/L Urea |
| 280170 | MD50 Suspended solids | Suspended solids 24 | 10 - 750 mg/L TSS |
| 280191 | MD50 Molybdenum, tablet reagents | Molybdate HR PP Molybdate LR PP Molybdate T | 1.6 - 40 mg/L Mo 0.05 - 3 mg/L Mo 1.5 - 30 mg/L Mo |
| 280195 | MD50 Molybdenum, powder reagents | Molybdate HR PP Molybdate LR PP Molybdate T | 1.6 - 40 mg/L Mo 0.05 - 3 mg/L Mo 1.5 - 30 mg/L Mo |
| 280200 | MD50 Copper, tablet reagents | Copper PP Copper T Copper VLR | 0.05 - 5 mg/L Cu 0.05 - 5 mg/L Cu 2 - 210 µg/L Cu |
| 280205 | MD50 Copper, powder reagents | Copper PP Copper T Copper VLR | 0.05 - 5 mg/L Cu 0.05 - 5 mg/L Cu 2 - 210 µg/L Cu |
| 280210 | MD50 Phosphate, tablet reagents | Phosphate LR T Phosphate PP | 0.05 - 4 mg/L P 0.05 - 2.5 mg/L PO4 |
| 280215 | MD50 Phosphate, powder reagents | Phosphate LR T Phosphate PP | 0.05 - 4 mg/L P 0.05 - 2.5 mg/L PO4 |
| 280230 | MD50 COD | COD HR TT COD LMR TT COD LR TT COD MR TT COD VLR TT | 0.2 - 15 g/L O2 15 - 300 mg/L O2 3 - 150 mg/L O2 20 - 1500 mg/L O2 2 - 60 mg/L O2 |
| 280220 | MD50 Manganese, tablet reagents | Manganese HR PP Manganese L Manganese LR PP Manganese T | 0.1 - 18 mg/L Mn 0.05 - 5 mg/L Mn 0.01 - 0.7 mg/L Mn 0.2 - 4 mg/L Mn |
| 280225 | MD50 Manganese | Manganese HR PP Manganese L Manganese LR PP Manganese T | 0.1 - 18 mg/L Mn 0.05 - 5 mg/L Mn 0.01 - 0.7 mg/L Mn 0.2 - 4 mg/L Mn |
| 280150 | MD50 Monochloramine, powder reagents | Chloramine (M) PP Chlorine (free) and Monochloramine | 0.02 - 3.27 0.02 - 3.27 mg/L Cl2 |


