VIKING-TU257 Benchtop Turbidity Meter
VIKING-TU257 Benchtop Turbidity Meter
Meet VIKING-TU257 — a benchtop turbidity meter built on the ISO 7027 standard with a long-life 850 nm LED, dual-photodiode optics, and 90° nephelometric detection. With zero + 1–6 point Formazin calibration, selectable NTU/FNU/EBC units, and 2000-record GLP memory with USB/RS-232 export, TU257 delivers repeatable results up to 1000 NTU.
Stable, standards-driven turbidity you can trust. TU257 pairs a bright 4.3″ color LCD and simple workflow with traceable multi-point calibration so your measurements stay consistent across shifts and sites.
- Clear, accurate turbidity across extended ranges with smart resolution stepping.
- Bench-friendly footprint with dedicated AC adapter power for 24/7 lab use.
- From setup to report in minutes — zero plus multi-point Formazin standards (2, 20, 200 NTU).
Highlights
- ISO 7027 compliance with a stable 850 nm LED and dual-photodiode optics for consistent, comparable results.
- Nephelometric principle, 90° detection for robust turbidity measurement in routine analysis.
- Traceable calibration — zero + 1–6 points using Formazin standards (2/20/200 NTU).
- Selectable units — NTU, FNU, EBC to match your method and reporting.
- GLP data — up to 2000 records with time/date; export via USB / RS-232.
- 4.3″ color LCD and intuitive UI reduce training and errors.
Typical Applications
- Drinking water and wastewater compliance testing
- Food & beverage process checks and QC
- Environmental monitoring, teaching labs and method training
- Routine lab analysis and inter-site comparison
Technical Specifications
| Model | VIKING-TU257 |
|---|---|
| Measuring Principle | Nephelometric (90° detection), dual photodiodes |
| Light Source | 850 nm LED (ISO 7027) |
| Units | NTU, FNU, EBC |
| Range | 0–10 NTU (0.001 NTU res); 0–100 NTU (0.01 NTU res); 0–1000 NTU (0.1 NTU res) |
| Accuracy | ±1% of reading + 0.01 NTU |
| Repeatability | ≤1.0% |
| Fluctuation | ±1.0% FS / 30 min |
| Calibration | Zero + 1–6 points (Formazin 2, 20, 200 NTU) |
| Display | 4.3″ color LCD |
| Data & I/O | USB, RS-232 |
| Power Supply | AC adapter (200–240 VAC input) |
| Dimensions / Weight | 330 × 250 × 130 mm; 2.5 kg |
| Included | 5× turbidity vials |
What’s in the box
- VIKING-TU257 turbidity meter
- 5× turbidity vials
- AC adapter
- Quick start guide
*Kit contents may vary by configuration.
FAQ
Which standard does it follow?
Measurements follow ISO 7027 using an 850 nm LED and 90° nephelometric detection.
How is calibration performed?
Zero calibration plus 1–6 points using Formazin standards (2, 20, 200 NTU).
Is TU257 suitable for bench-top lab work?
Yes — TU257 is a benchtop model optimized for AC-powered operation and routine lab analysis.
Downloads
Request a Quote
Tell us your application (sample type, expected turbidity range, required accuracy), and we’ll propose the right calibration standards and vial handling procedure.
Learn more about turbidity:
Turbidity (Wikipedia).
Explore more turbidity meters.
Category: Turbidity Meters • Tags: benchtop, turbidity, ISO 7027, NTU, Formazin, GLP
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