COLO.Science — WATER QUALITY / TURBIDITY METERS — VIKING257
VIKING257 Benchtop Turbidity Meter
VIKING257 benchtop turbidity meter is a laboratory instrument for routine
turbidity measurement in water, wastewater, process water and environmental samples. With an
ISO 7027 850 nm LED optical system, 90° nephelometric detection,
0–1000 NTU measuring range, range-dependent resolution down to 0.001 NTU,
1–6 point calibration, NTU / FNU / EBC reporting units and USB / RS-232 communication,
VIKING257 is suitable for water quality laboratories, industrial QC, wastewater monitoring, environmental analysis
and routine laboratory turbidity control.
| Overview | Video Soon | Quote |
COLO.SCIENCE — BENCHTOP WATER QUALITY / TURBIDITY METERS
Benchtop turbidity meter for ISO 7027 water-quality workflows
The VIKING257 benchtop turbidity meter is designed for laboratories that need stable, repeatable and well-documented turbidity measurement. It supports NTU, FNU and EBC reporting units in one structured benchtop platform with ISO 7027 near-infrared optics, guided calibration, data storage and digital communication.
This laboratory turbidity meter is suitable for drinking water, wastewater, surface water, industrial process water, food and beverage QC, environmental monitoring and teaching laboratories where reliable turbidity results, calibration traceability and simple operation are important.
Key features
- Benchtop laboratory turbidity meter for routine water-quality analysis.
- ISO 7027 850 nm LED optical system for near-infrared turbidity measurement.
- 90° nephelometric detection with dual photodiode optical design.
- 0–1000 NTU measuring range with range-dependent 0.001 / 0.01 / 0.1 NTU resolution.
- Accuracy ±1% of reading + 0.01 NTU for routine laboratory workflows.
- 1–6 point calibration using Formazin standards or zero water.
- USB / RS-232 communication for data transfer and reporting.
Suitable for
- Drinking water and treated water turbidity testing.
- Wastewater, effluent and process-water monitoring.
- Environmental laboratories analysing rivers, lakes and surface water.
- Industrial quality-control laboratories requiring repeatable turbidity data.
- Food and beverage process checks where clarity and turbidity are monitored.
- Teaching laboratories and routine method training for turbidity measurement.
TECHNICAL SPECIFICATIONS — VIKING257 BENCHTOP TURBIDITY METER
| Model | VIKING257 |
| Product type | Benchtop laboratory turbidity meter |
| Measured parameter | Turbidity |
| Measuring principle | Nephelometric principle, 90° scattered-light detection |
| Optical system | Dual photodiode design: reference detection and 90° scattered-light detection |
| Light source | 850 nm LED, ISO 7027 near-infrared turbidity optics |
| Measurement units | NTU / FNU / EBC |
| Measuring range | 0–1000 NTU |
| Range / resolution | 0–10 NTU: 0.001 NTU · 0–100 NTU: 0.01 NTU · 0–1000 NTU: 0.1 NTU |
| Accuracy | ±1% of reading + 0.01 NTU |
| Repeatability | ±1% of reading or ±0.01 NTU, whichever is greater, under reference conditions |
| Calibration | 1–6 point calibration using Formazin standards or zero water |
| Data storage | Up to 2000 calibration curves / measurement data sets |
| Display | 4.3″ color LCD |
| Communication | USB / RS-232 data transfer |
| Operating temperature | 5–40 °C |
| Power supply | 220 V ±10%, 50 Hz |
| SKU | PRO5782 |
Final measurement performance depends on calibration standards, vial condition, sample matrix, bubble control,
cleaning procedure, operator method and laboratory QA workflow. Supplied calibration standards and accessories should be confirmed before quotation.
Calibration, optical stability and data management
Multi-point turbidity calibration
VIKING257 supports 1–6 point calibration using Formazin standards or zero water.
This helps laboratories adapt the turbidity calibration routine to low-range drinking water analysis,
wastewater testing or broader process-water control.
ISO 7027 optical workflow
The 850 nm LED and 90° nephelometric detection principle support routine turbidity measurement
where near-infrared optical stability and comparable reporting are required across laboratory workflows.
GLP-oriented data handling
The instrument stores up to 2000 data sets and supports structured export via USB and RS-232,
making it practical for traceable laboratory documentation and routine quality-control reporting.
COLO.SCIENCE VIDEO
VIKING257 video presentation is in preparation
The video will present turbidity meter operation, calibration workflow, vial handling,
sample measurement, data export and practical laboratory use of the VIKING257 benchtop turbidity meter.
COLO.SCIENCE KNOWLEDGE
Learn more about laboratory water quality analysis
Explore COLO.Science resources covering turbidity meters, water quality instruments,
sample preparation, electrochemistry and routine laboratory measurement workflows.
Applications and laboratory value
Drinking water laboratories
The VIKING257 benchtop turbidity meter is suitable for low-turbidity drinking water checks,
treatment verification and routine quality-control monitoring.
Wastewater and effluent testing
The 0–1000 NTU range supports wastewater, effluent and process-water workflows where sample turbidity
can vary significantly between measurement points.
Environmental monitoring
Useful for rivers, lakes, surface water and environmental laboratory monitoring where repeatable turbidity
results and clear data handling are required.
Industrial and teaching laboratories
The clear display, multi-point calibration and digital export options make VIKING257 practical for
industrial QC, teaching laboratories and routine method training.
How to choose the correct turbidity meter configuration
When selecting the VIKING257 benchtop turbidity meter, the expected turbidity range,
sample type, laboratory method, reporting unit and calibration standard set should be checked before quotation.
Low-turbidity drinking water analysis usually requires careful vial handling, clean cuvettes and suitable low-range
calibration practice, while wastewater and process samples may require a wider calibration range and more frequent cleaning.
COLO.Science can support the selection of calibration standards, replacement cuvettes, data-transfer options
and accessories so that the final VIKING257 configuration matches the laboratory application and reporting workflow.
VIKING257 benchtop turbidity meter for daily water-quality measurement
The VIKING257 benchtop turbidity meter is useful when a laboratory needs a stable instrument for
routine turbidity analysis with ISO 7027 near-infrared optics and a broad 0–1000 NTU range. The combination of
850 nm LED light source, 90° nephelometric detection, multi-point calibration and digital data
transfer supports repeatable laboratory work in routine and method-based applications.
In practice, turbidity measurement quality depends not only on the meter but also on cuvette cleanliness,
calibration standard quality, bubble removal, sample homogenisation, operator routine and correct method selection.
VIKING257 provides the benchtop measurement platform, while COLO.Science can help define the correct calibration
and accessory set for the final application.
Configuration notice
Turbidity meters may be delivered in different configurations depending on selected calibration standards,
cuvettes, communication accessories and laboratory method requirements. The official quotation defines the final
scope of supply. Website content is provided for general product presentation and may not represent the exact
delivered configuration. Specifications may change without notice.
