COLO.Science — Water Quality · Turbidity meters
VIKING257 Benchtop Turbidity Meter
VIKING257 measures turbidity of drinking water, process water and wastewater by the nephelometric (90°) method with a 850 nm LED (ISO 7027): 0–200 NTU, ±2 % of reading + 0.02 NTU, zero and 1–3-point Formazin calibration.
Overview
Applications
- Drinking water: turbidity control after filtration and disinfection.
- Wastewater: influent, effluent and clarifier monitoring.
- Industry: process water, beverages, pharma and chemicals.
- Environment: surface water and field sampling.
Why VIKING257
- Accuracy: ±2 % of reading + 0.02 NTU
- Calibration: Zero + 1–3 points with Formazin standards
- Light source: 850 nm LED (ISO 7027)
- Repeatability: ≤1.0 %
Technical specifications
| Model | VIKING257 |
| SKU | PRO5782 |
| Light source | 850 nm LED (ISO 7027) |
| Measuring principle | Nephelometric (90°) |
| Range (auto) | 0.00–20.00 / 20.0–200.0 NTU |
| Resolution | 0.01 / 0.1 NTU |
| Accuracy | ±2 % of reading + 0.02 NTU |
| Repeatability | ≤1.0 % |
| Stability | ±1.0 % FS / 30 min |
| Units | NTU, FNU, EBC |
| Calibration | Zero + 1–3 points with Formazin standards |
| Power supply | Adapter, 200–240 V AC input |
| Dimensions | 330 × 250 × 130 mm |
| Weight | approx. 2.5 kg |
ACCESSORIES AND CONSUMABLES
Accessories for the VIKING257
The VIKING257 is delivered with 5 turbidity vials, power adapter. Calibration standards are ordered separately to match the measuring range; spare vials and silicone oil keep the readings reliable.
PRO7162
Turbidity vials, 5 pcs
Optical glass sample vials with screw caps; keep them clean and scratch-free, mark the orientation.
Standard delivery
Consumables on request
- Formazin standards 2 / 20 / 200 NTU
- Silicone oil and lint-free cloth
- PRO7162 — Turbidity vials, 5 pcs
Standards, vials and consumables on request. Full catalogue: Electrochemistry catalogue →
Selection guidance
VIKING257 is chosen for simple low-range laboratory checks up to 200 NTU. COLO.Science helps you choose standards and vials.
Configuration checklist
- Range: low turbidity (drinking water) or up to 200 NTU (wastewater).
- Standard: ISO 7027 (LED) or US EPA 180.1 (tungsten lamp).
- Place of use: laboratory bench or field (IP65 portable).
- Calibration: weekly in routine work or before critical tests, from the lowest to the highest standard, then verification.
Sales and support for international customers
COLO Lab ExpertsPolje ob Sotli 4, SI-3255 Buče, Slovenia
Phone: +386 70 713 437 · Email: sales@colo.si · Web: colo.si
We supply laboratories across Europe directly and through partners. B2B prices are quoted net, excluding VAT.
