

928.20 €
inkl. 19% MwSt., plus shippingUnit price plus VAT and shipping costs
Available on backorder
The Apera Instruments TN420 provides fast and reliable measurements of the turbidity (turbidity) of liquids. The instrument is equipped with a tungsten filament lamp and operates via a 90° nephelometric scattering method that is consistent with U.S. EPA 180.1 method for determining turbidity in drinking, ground, surface, and saline waters, as well as in domestic and industrial wastes. The large LCD with progress indicator and intuitive operating instructions in picture and text form make it user-friendly and easy to operate. It is suitable for use on site or in the laboratory.
The TN420 is ISO9001:2015 and CE certified and has a 2 year warranty.
| Weight | 1.75 kg |
|---|---|
| Dimensions | 31 × 30 × 11 cm |
| Measuring method | U.S. EPA 180.1 compliant nephelometric method (measurement of the scattered radiation of white light at 90°) |
| Light source | Tungsten filament lamp (400nm – 600nm) |
| Measuring range | 0 to 1000 NTU (FNU), automatic range selection:
0.01 to 19.99 NTU (FNU) 20.0 to 99.9 NTU (FNU) 100 to 1000 NTU (FNU) |
| Accuracy | ≤ ±2% of the measured value ± stray light |
| Reproducibility | ≤ ±1 % of the measured value or 0.02 NTU (FNU) (whichever is greater) |
| Resolution | 0.01 / 0.1 / 1 NTU (FNU) |
| Scattered light | ≤0.02 NTU (FNU) |
| Calibration standard | 0, 20, 100, 400, 800 NTU (FNU) AMCO Polymer or Formazin |
| Light detector | Silicon photocell |
| Measurement modes | Normal measurement and average measurement |
| Display | TFT color display |
| Measuring cuvettes | ø25×60 mm, borosilicate glass with screw cap |
| Test volume | 18 ml |
| Power supply | 3.7V rechargeable lithium battery |
| Operating conditions | Temperature: 0 – 50 °C (32 °F – 122 °F); rel. Humidity: 0 – 90% at 30°C,
0 – 80% at 40°C, 0 – 70% at 50°C, no condensation |
| Storage conditions | Instrument: -40 to 60 °C (-40 to 140 °F)
Calibration solutions: 5 to 30 °C (41 to 86 °F) |
| Enclosure protection class | IP67 |
| Safety certificate | CE and RoHS |
| Dimensions and weight | Measuring device: (90×203×80) mm/ 385 g
Complete set: (310×295×110) mm/ 1.5 kg |
A complete set contains:

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