The ALV / CGS-5022F

• Cylindrical 22 mW HeNe laser @ 632.8 nm, linear polarized, extremely long lifetime, air-cooling,
  low power consumption, inexpensive tube replacement !
• 1 pcs. optical detector using a near single mode fiber optical detection system, accessible scattering angle range of approx. 10° ... 153°, minimum angular step is 0.003°.
• Specially selected (count rate linearity and correlation) Avalanche Photo Diode single photon detector
• ALV developed fast and safe overload protection unit for the APD module
• Extremely high sensitivity, toluene count rates at 90° Scattering Angle of >20 kHz !!!
• 4-Quadrant Monitor Diode for laser beam monitorisation in intensity and beam position and precise count rate normalisation for SLS measurements
• Pt-100 based sample temperature measurement with better +/- 0.1K absolute accuracy
• 1 : 1000 automatic attenuation range laser beam attenuator with 100%, 31%, 10%, 3%, 1%, 0.3% and
  0.1% transmission
• ALV proprietary index matching vat with plan-parallel laser beam entry/exit windows
• ALV-LSE-III, light scattering electronics including stepper motor driver, absolute encoder etc.
• Numerous alignment tools (needles, dial-gauges, projection optics, etc.) - these, coupled with our ALV-WinAlign Software allows a deterministic and reproducable alignment of the goniometer in hours, rather than days, even for unskilled users !
• ALV-5000/EPP Multiple Tau Digital Correlator with 125 ns initial sampling time
• ALV-Software System, including the latest version of the ALV-Correlator Control Software, ALV-Fit&Plot and ALV-WinAlign

   Application

• High Performance DLS & SLS in cylindrical cuvettes with outer diameter as small as 10 mm
• Molecular Weight Determination, Virial Coefficient Determination
• Diffusion Coefficient Determination
• Particle Size Determination
• Structure Factor and Form Factor Determination
• Physics, Chemistry, Physical Chemistry and Biochemistry
• Polymers, Latex, Micells, Proteins, Peptides, Anorganic Material ...

  Options

• Optional optical-fiber-splitter based “pseudo-cross-correlation” detection using two high QE-APDs and the
  ALV/6010-160 Multiple Tau Digital Correlator with 6,25 ns initial sampling time instead of the ALV-5000/EPP
• Depolarized light scattering (additional Glan/Glan-Thomson prism, analyzor in compensated rotation mount)
• High temperature cell housing (+5°C ... +155°C) instead of the standard cell housing (+5°C ... +55°C)
• Cuvette Rotation Unit to allow measurement of non-ergodic samples (e.g. gels)