Sophisticated Particle Characterisation with the DelsaMax™ Series from Beckman Coulter

The DelsaMax™ Pro and the DelsaMax™ Core are the most rapid of their kind, enabling simultaneous analysis of both particle size and zeta potential for sample volumes as small as 45 µl, in below one second.

The advantages offered by the new DelsaMax™ Series are high precision, speed, and consistency, enabling improvement in nanoparticle research. Each instrument helps obtain a great deal of information from even the smallest of samples.

The DelsaMax™ Series is the perfect addition to an already high-quality series of advanced particle characterization solutions from Beckman Coulter, developed over five decades ago, when Wallace Coulter formulated the technique that established the field.

Specifications of the DelsaMax Pro

DelsaMax Pro
Size Range 0.4 to 10,000 nm, hydrodynamic diameter (limited by particle sedimentation)
Molar Mass Range 5×107 g/mol (Da) (dependent on molecular shape model)
Minimum Sample Volume 45 µL
Minimum Measurement Time 1 second
Zeta Potential Measurement
Minimum Sample Volume 170 µL, excluding tubing
Ionic Strength Range 0 to 50 mS/cm (4 times the conductivity of physiological saline)
Mobility Range No practical limit
Mobility Size Range 2 nm to 15 µm diameter
Mobility Sensitivity 1 mg/µL Lysozyme
Minimum Measurement Time 1 second

Specifications of the DelsaMax Core

Size Measurement
Dynamic Light Scattering Size Range (Diameter–nm) 0.4 to 5,000
Static Scattering Molecular Weight Range 300 to 106 Da (concentration dependent)
Minimum Sensitivity 0.1 mg/µL Lysozyme
Scattering Angle 90°
Minimum Sample Volume 1.25 µl standard cuvette, 4 µl disposable cuvette
Correlator 512 channels (100 nsec sampling time in a multi-tau layout)
Data Acquisition Time 1 to 3,600 seconds
Minimum Measurement Time 1 second

Key Features

  • Incredible speed – two simultaneous detection systems enable rapid measurements
  • Offers 32 simultaneous measurements bringing down run time and improving accuracy
  • Proprietary normal algorithm offers robust distributions
  • The particles of interest are selected by the optimized auto-correlation function
  • Without re-running of samples, datapoints or flyers can be edited
  • With both real and dynamic static light scattering, ten protein measurements can be obtained without sample degradation
  • Results can be easily overlaid to verify consistency and accuracy
  • Instant cross-checking of results is possible with parallel independent measuring systems

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