NEPHELOstar Plus
Microplate Nephelometry Reader
Microplate Nephelometry Reader






















































The NEPHELOstar® Plus microplate nephelometer was developed to meet high-throughput demands for fast compound solubility screens. It detects insoluble particles in liquid samples by measuring forward scattered light and can be used for turbidity measurements, drug solubility screening, protein binding kinetics, microbial growth, and petroleum process control.
| Detection Modes | Nephelometry (light scattering) |
|---|---|
| Measurement Modes | Endpoint and kinetic measurements |
| Microplate Formats | Up to 384 well plates |
| Microplate Carrier | Robot compatible |
| Light Sources | Self-monitoring Laser Diode Wavelength: 635±10 nm Stability: ‹0.2% deviation Lifetime: 20,000 hours Output: 1 mW Selectable beam width: 1.5 to 3.5 mm Selectable intensity: 0-100% Scattering angle: Detects up to 80° full cone angle |
| Detectors | Side window photodiode detector |
| Wavelength Selection | Photodiode Wavelength: 635±10 nm |
| Sensitivity | Depends on particle size and liquid properties Silica detection (particle size 0.5 to 10 µm): 800 nM Dynamic range: 5 decades Maximum count rate: 2,000,000 Relative Nephelometry Units (RNUs) per second |
| Read Times | Depend on assay conditions and liquid surface stability Shortest times possible: 16 sec (96), 47 sec (384) |
| Shaking | Linear, orbital and double-orbital with user-definable time and speed |
| Incubation | +4°C above ambient up to 45°C or 60°C (optional) The upper heating plate of the incubation chamber operates at 0.5 °C more than the lower plate. This prevents condensation build-up on the lid or sealer. |
| Software | Multi-user Reader Control Software & MARS Data Analysis Software FDA 21 CFR Part 11 compliant |
| Dimensions & Weight | Width: 44 cm, Depth: 48 cm, Height: 32 cm; Weight: 25 kg |
| Optional Accessories |
Atmospheric Control Unit (ACU)System to actively regulate O2 and CO2 (0.1-20%).
Purge Gas VentSystem to inject an atmosphere or to pull a vacuum into the reader.
Stacker IIIPlate handler for up to 50 microplates - continuous loading feature
Reagent Dispenser ModuleUp to 2 built-in reagent injectors Injection at measurement position (6 to 384-well) Individual injection volumes for each well: 3 to 500 μL Variable injection speed up to 420 μL/sec Up to 4 injection events per well Reagent back flushing THERMOstarMicroplate incubator and shaker |