Wyatt, Multi-angle Light Scattering (miniDAWN TREOS)

Manager: Yinghua Chen, PhD Contact Email: yinghua.chen@case.edu Contact Phone: 216-368-8962 Availablility: By Availability

Major Applications:

The multi-angle light scattering detector for determining the absolute molar masses and size of your molecules from a few hundred daltons to several million without the need for reference standards or column calibration.

Major Specifications:

Light Source: 50mW GaAs linearly polarized

Laser Wavelength: 658nm (nominal) Each instrument is individually characterized.

Laser Lifetime: >10,000 hours

Detectors: 3 angles

Detector type: Custom-designed, ultra-quiet hybrid photodiodes with built in FET transimpedance amplifiers

Detector Resolution: 24 bit

Mobile phase compatibility: All-solvent compatible (aqueous and organic)

Instrument Options:  Embedded QELS at 90 degrees / Embedded COMET flow cell cleaning system

Scattering Volume: 0.02 μL

Signal Processing: On chip sinc3 filter with proprietary dust rejection filter

Electronic Inputs: 4 differential analog inputs with 24 bit resolution. TTL inputs for Alarm in, Autoinject contact closure, Recycle in

Electronic Outputs: 3 single ended analog outputs from (-10V, 10V ) which retransmit any measurement signal. TTL alarm output, autoinject retransmit, Recycle valve power

Molar Mass Range: ≤10³ to 10⁶ g/mole (daltons)*

Molecular Size Range: 10 nm to 50 nm†

Computer Interface: Ethernet and USB 2.0 interface

Processed Data Transmission Rate: Software selectable from 36.6 Hz to 0.2 Hz

Front Panel Display: 162.5mm 16-bit high resolution LCD display with Graphical User Interface

Power: 960W max, 75W typical