COLO.Science — WATER QUALITY / TURBIDITY METERS — VIKING250 SERIES
VIKING250 laboratory turbidity meter | COLO.Science
VIKING250 Series Laboratory Turbidity Meter is a family of benchtop turbidity meters for precise turbidity measurement in drinking water, wastewater, environmental, industrial and research laboratories. The series includes VIKING255, VIKING256 and VIKING257, covering low turbidity, high precision and smart multi-range measurement workflows.
The platform combines an 850 nm LED light source, 90° nephelometric detection, dual photodiodes, selectable NTU / FNU / EBC units, 1–6 point Formazin calibration, GLP-oriented storage for up to 2000 curves / data sets and USB / RS-232 communication.
| Overview | Tech Spec | Video Soon | Quote |
COLO.SCIENCE — BENCHTOP WATER QUALITY / TURBIDITY ANALYSIS
Benchtop turbidity meter series for NTU, FNU and EBC measurement
The VIKING250 laboratory turbidity meter series is designed for laboratories that need stable, traceable and repeatable turbidity measurements. Depending on the selected model, the series covers 0–100 NTU or 0–1000 NTU workflows with fine resolution down to 0.001 NTU.
The instruments use a cold 850 nm LED, a precision optical system with two photodiodes, and 90° scattered-light detection. This makes the platform suitable for drinking water control, wastewater testing, environmental monitoring, industrial process water and routine laboratory analysis.
Key features
- Benchtop laboratory turbidity meter series for NTU, FNU and EBC measurement.
- 850 nm LED light source with long lifetime and narrowband interference optical design.
- 90° nephelometric detection with reference and scattered-light photodiodes.
- 1–6 point calibration using Formazin standards or zero water.
- GLP-oriented data storage for up to 2000 calibration curves / measurement records.
- USB 2.0 and RS-232 interfaces for PC data transfer and documentation workflows.
- 4.3″ color LCD with backlight and user-friendly interface for daily operation.
Suitable for
- Drinking water and low-turbidity control.
- Wastewater, effluent and process-water turbidity checks.
- Environmental water monitoring for rivers, lakes and surface water.
- Industrial cooling water and utilities monitoring.
- Food and beverage process-water clarity checks.
- Teaching laboratories, research laboratories and routine QA/QC workflows.
- Laboratories that require traceable calibration and documented measurement results.
MODEL SELECTION — VIKING255 / VIKING256 / VIKING257
Choose the correct VIKING250 model for your turbidity range
VIKING255 — low turbidity
Best suited for drinking water and low-turbidity samples. Measuring range is 0–100 NTU, with basic readout of 0.001 NTU and resolution optimized for low-level turbidity work.
VIKING256 — wide range
Best suited for routine laboratory samples where higher turbidity may be expected. Measuring range is 0–1000 NTU, with 0.01 NTU basic readout and range-dependent resolution.
VIKING257 — smart multi-range
Best suited for variable samples where both low and higher turbidity may occur. Measuring range is 0–1000 NTU, with 0.001 / 0.01 NTU auto-ranging readout and listed accuracy of ±1% + 0.01 NTU.
TECHNICAL SPECIFICATIONS — VIKING250 LABORATORY TURBIDITY METER SERIES
| Series | VIKING250 Series |
| Models | VIKING255 / VIKING256 / VIKING257 |
| Product type | Benchtop laboratory turbidity meter |
| Measurement parameter | Turbidity |
| Units | NTU, FNU, EBC |
| Measurement principle | Nephelometric principle, 90° scattered-light detection |
| Light source | 850 nm LED, cold light source, narrowband interference, lifetime up to 100 000 h |
| Detector | 2 high-precision photodiodes: reference and 90° scattered light |
| Display | 4.3″ color LCD, backlit, user-friendly interface |
| Calibration | 1–6 points using Formazin standards or zero water; user-defined piecewise curves |
| Data storage | Up to 2000 calibration curves / measurement data sets; GLP-oriented review |
| Communication | USB 2.0 and RS-232 interface for PC data transfer |
| Ambient temperature | 5 °C … 40 °C |
| Power supply | 220 V ±10%, 50 Hz |
| Weight | Approx. 3.5 kg net / 4.5 kg gross |
| Parameter | VIKING255 | VIKING256 | VIKING257 |
|---|---|---|---|
| Application | Drinking water / low turbidity | High precision / wide range | Smart / variable samples |
| Measuring range | 0–100 NTU | 0–1000 NTU | 0–1000 NTU |
| Basic readout | 0.001 NTU | 0.01 NTU | 0.001 / 0.01 NTU auto-ranging |
| Resolution details | 0–10 NTU: 0.001 NTU 0–100 NTU: 0.1 NTU |
0–20.00 NTU: 0.01 NTU 20.0–200.0 NTU: 0.1 NTU 200–1000 NTU: 1 NTU |
0–10 NTU: 0.001 NTU 0–100 NTU: 0.01 NTU 0–1000 NTU: 0.1 NTU |
| Accuracy | ±2% + 0.01 NTU | ±2% + 0.01 NTU | ±1% + 0.01 NTU |
| Repeatability | ±1% of reading or ±0.01 NTU, whichever is greater, under stable reference conditions | ||
| Allowed error | ±2% of reading | ||
APPLICATIONS — WATER QUALITY / PROCESS CONTROL / LABORATORY QA
Laboratory turbidity measurement with traceable calibration
Turbidity is one of the key indicators for suspended particles, filtration performance, water clarity and process stability. VIKING250 Series instruments support daily laboratory workflows where operators need reliable turbidity values, documented calibration and repeatable sample handling.
Typical workflows
- Drinking water quality control and low-turbidity verification.
- Wastewater treatment monitoring and effluent checks.
- Surface water, river, lake and environmental monitoring.
- Industrial process water and cooling water particulate monitoring.
- Food and beverage process clarity checks.
Measurement support
- Selectable units: NTU, FNU and EBC.
- Calibration with Formazin standards or zero water.
- User-defined curves and coefficients for specific ranges.
- GLP-oriented record review with user ID and date/time fields.
- USB / RS-232 communication for documentation and reporting.
Standard delivery and configuration notes
Typical delivery package
- VIKING255 / VIKING256 / VIKING257 main unit, depending on selected model.
- Calibration standard set: 0.02 NTU, 10 NTU and 1000 NTU.
- 5 high-precision glass cuvettes.
- Dust cover and light-tight measuring slot.
- Power cord, 220 V / 50 Hz.
- Instruction manual and USB cable; RS-232 optional on request.
Optional accessories and checks
- Additional calibration standards for application-specific ranges.
- Replacement cuvettes and cuvette handling accessories.
- Different standard sets depending on workflow and regulation.
- Bluetooth or additional communication options where available.
- Final delivery content should always be confirmed through the official quotation.
VIDEO SUPPORT — COMING SOON
VIKING250 turbidity meter video guide
A short video guide can be added here later to show cuvette handling, calibration standards, measurement workflow, GLP record review and basic turbidity measurement practice.
VIKING250 laboratory turbidity meter for routine water quality measurement
The VIKING250 laboratory turbidity meter series is useful when a laboratory needs a stable benchtop instrument for daily turbidity analysis. The combination of 850 nm LED optics, 90° nephelometric measurement, Formazin calibration and GLP-oriented storage supports repeatable measurement work in water quality laboratories, treatment plants, research institutions and industrial QA/QC environments.
Correct turbidity results depend on careful cuvette handling, clean sample cells, suitable calibration standards, correct range selection and stable measurement conditions. COLO.Science can support the selection of the appropriate VIKING255, VIKING256 or VIKING257 configuration, calibration standard set and accessory package for the final application.
Configuration notice
Turbidity meters may be delivered in different configurations depending on the selected model, calibration standard set, cuvettes, communication options and regional supply package. 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.
