Lovibond turbidity meter TB350
This compact yet extremely precise measuring instrument impresses users in laboratories, environmental analysis and water treatment alike. Those who expect reliable results with extremely low and high turbidity values will benefit from the special Multipath 90° BLAC technology, which ensures accurate and consistent detection of the particle concentration. Comparisons, such as with the [CyberScan TB 1000 turbidimeter], show that a well thought-out measurement setup in combination with robust sensors is particularly important for analysis in drinking or waste water and for swimming pool water treatment.
The handy design and intuitive operation via a color touchscreen provide a convenient user experience. Whether users opt for the IR model (WM-040-1004) in accordance with ISO 7027 or the WL model (WM-040-1001) with a white light source (EPA pending) - in both cases, the integrated data logger enables seamless recording of all measurements and calibrations. Compared to similarly designed devices such as the [Hanna Instruments HI98713-01], which are also developed for field measurements, this solution scores with particularly fast and accurate results, supported by a fast-settling mode for samples with fast particle sedimentation behavior.
Performance characteristics and special features
This turbidity meter uses patented Multipath 90° BLAC technology, which enables highly sensitive measurement in a range from 0.01 to 4000 NTU. The resolution is always based on the current measuring range and therefore guarantees reliable measurement results, whether for pure water or more turbid samples. The following highlights characterize the model:
- Available light sources: Infrared LED (IR) in accordance with ISO 7027 or white light (WL) for use in EPA applications
- Autoranging from 0.01-9.99 (0.01 NTU), 10.0-99.9 (0.1 NTU) and 100-4000 (1 NTU)
- ± 1.8 % accuracy of the measured value plus stray light for reproducible results
- Support of different units: NTU, FNU, degrees, mg/l kaolin and mg/l PSL
- Large, full-color touchscreen for guided, animated measurement sequences
- Fast response time of just 7 seconds
- Ratio sensor technology for extended measurement options, calibration with T-CAL standards
The set includes four T-CAL calibration standards (5, 20, 800 and 4000 NTU), an additional standard of 2000 NTU depending on the model, two sample cuvettes with lids, silicone oil for cuvette maintenance as well as batteries, cleaning accessories and a practical carrying case. This means that both selective field measurements and continuous use in the laboratory can be professionally covered ex works.
Logging and data transfer are particularly easy thanks to USB-A and USB-C interfaces. Settings such as energy-saving and auto-off mode help to optimally control the operating times in mobile operation. Both the IR and WL versions are IP67-protected and are therefore suitable for harsh environments in industry, municipal technology or research.
Certifications and standards
- IR model (WM-040-1004): Compliant with ISO 7027
- WL model (WM-040-1001): EPA pending (current approvals under review)
- Devices are CE-, CSA-, FCC-, RoHS-, TÜV-, UL- and WEE-compliant
In water treatment and environmental monitoring in particular, these certifications are often a prerequisite in order to meet the requirements for process documentation and quality management. Added to this is the extensive calibration process, which is covered across the entire measuring range from 0 to 4000 NTU thanks to T-CAL standards.
Concrete application examples
- Drinking water treatment: Check filter performance in waterworks by regularly measuring turbidity to detect changes at an early stage
- Wastewater treatment: Use this device to check the efficiency of wastewater treatment plants and flocculants by continuously recording the turbidity in the effluent.
- Swimming and leisure pools: Ensure a clear view and hygienically perfect pools by checking the turbidity level at defined intervals.
- Environmental monitoring: Use the portable application options to quickly test rivers, lakes or other bodies of water for pollution.
Surfactants, flocculants or coagulants such as aluminum sulfate are often used in wastewater analysis. The powerful sensor technology detects even subtle changes in turbidity, which allows conclusions to be drawn about the effectiveness of the chemical additives.
FAQs
How often should a calibration be carried out?
Regular calibration with the T-CAL standards is recommended, for example once a week or according to internal process specifications. This will ensure consistent measurement results.
Can the device also be used outdoors?
Yes, thanks to its IP67 protection class and compact design, the measuring instrument is ideal for outdoor use. Just make sure to protect the cuvettes from direct sunlight.
Which power supply is recommended for longer measurement campaigns?
The use of an optional mains adapter or rechargeable NiMH batteries allows long-term measurement series without interruption. Four AA batteries are sufficient for mobile use.
How do I proceed with highly sedimenting samples?
Use the fast settling mode: the device detects backfilling and sedimentation processes in real time and compensates for them using Multipath 90° BLAC technology.
What sample quantity is required
About 10 ml of material is sufficient to obtain precise turbidity values. Make sure the cuvettes are clean and use silicone oil to minimize interfering reflections.
Conclusion
The Lovibond TB350 turbidity meter offers an outstanding combination of mobile suitability, laboratory precision and uncomplicated handling. Users in the water treatment, wastewater treatment and environmental sectors benefit from the Multipath 90° BLAC technology and the flexibly adaptable measurement modes. From the precise resolution of the smallest turbidities to the reliable recording of high values for process monitoring: This series sets standards when it comes to reliability and measurement quality in demanding fields of application.
