| Apera TN400 | |
| Measuring Method | ISO 7027 compliant nephelometric method（90°） |
| Measuring Range | 0 to 1000 NTU, automatic range selection: 0.01 to 19.99 NTU 20.0 to 99.9 NTU 100 to 1000 NTU |
| Resolution | 0.01/0.1/1 NTU |
| Reading Error | ≤ ±2 % of reading± stray light |
| Repeatability | ≤ ±1% of reading or 0.02 NTU, whichever is greater |
| Calibration Standards | 0.02 NTU, 20.0 NTU, 100 NTU, 800 NTU(Polymer) |
| Light Source | Infrared light emitting diode（850nm wavelength） |
| Detector | Silicon photovoltaic |
| Display | TFT Color screen |
| Sample Vials | Φ25×60 mm, high borosilicate glass with screw cap |
| Sample Volume | 18 ml |
| Operating Temp. Range | 0 to 50˚C (32 to 122˚F) |
| Power Supply | 4× AA Alkaline Batteries |
| IP Rating | IP67 |
| Dimension/Weight | Meter：(90×203×80)mm / 385 g Portable Case：(310×295×110)mm / 1.5 kg |
| Quality and Safety Certificate | ISO9001:2008 & CE |
