Key Features

• • Measurement principle Dynamic Light Scattering (DLS)
  • Measuring range 0.3 nm to 10 μm (particle diameter)
  • Measurement angles 15°, 90°, 175° 175°
  • Min. concentration 0.1 mg/mL (lysozyme)
  • Max. concentration 50 %w/v (sample-dependent)
  • Min. sample volume 12 µL
  • Accuracy Better than +/-2 % on NIST traceable standards
  • Repeatability Better than +/-2 % on NIST traceable standards

Zeta potential specifications

• • Measuring principle Electrophoretic Light Scattering (ELS) / cmPALS –
  • Measuring range >= +/-1000 mV –
  • Mobility range 10 -11 m²/V.s to 2 x 10 -7 m²/V.s –
  • Size range 3.8 nm to 100 µm (diameter) –
  • Min. sample concentration 0.1 mg/mL (lysozyme) –
  • Max. sample concentration 70 %w/v (sample-dependent) –
  • Max. sample conductivity 200 mS/cm –
  • Min. sample volume 50 µL (sample-viscosity-dependent) –
  • Accuracy Better than +/-10 % –
  • Repeatability +/-3 % –

Molecular mass specifications

• • Measuring principle Static Light Scattering (SLS) –
  • Measuring range (mass) 980 Da to 20 MDa –
  • Measuring range (particle size) up to 40 nm (diameter) –
  • Measurement angle 90° –
  • Min. sample concentration 0.1 mg/mL (lysozyme) –
  • Accuracy +/-10 % –
  • Repeatability +/-5 % –

Transmittance specifications

• • Measuring range 0 % to 100 %
  • Min. sample volume 15 µL
  • Accuracy Better than +/-1 %

Refractive index specifications

• • Measuring range 1.28 to 1.50 –
  • Min. sample volume 1 mL –
  • Accuracy +/-0.5 % –

General specifications

• Light source Semiconductor laser diode / 40 mW, 658 nm
• Laser warm-up time 6 min
• Temperature control range 0 °C to 90 °C
• Ambient operating temperature 10 °C to 35 °C