Vasco FlexTM

The VASCO-FlexTM is a unique and fully agile nanoparticle size analyzer combining the power of Dynamic Light Scattering (DLS) and the flexibility of optical fibers.

Technologies & innovations

The main unit of the VASCO-Flex includes:

  • High sensitivity – low noise single photon detector
  • High resolution linear timescale correlator (up to 1000 channels)
  • External high accuracy temperature sensor
  • Visible alignment laser for easy positioning of the probe
  • Various plug & play measurement head options with Optical Fiber umbilical

Main characteristics

  • Particle size (diameter) : 0.5nm -10 μm
  • “A la carte” and pay-as-you-grow configuration
  • Flexibility and upgradability with various plug & play options: one main unit and various interchangeable heads
  • On-demand optical fiber umbilical length from 1m up to 20 m
  • Powered by the NanoQ proprietary software
DLS Vasco Flex

Interchangeable measurement heads

  • VASCO-FLEX with Dual Thickness Controller head
  • VASCO-FLEX with in situ head
  • VASCO-FLEX with Thermalized head
  • VASCO-FLEX with Custom head

VASCO-FLEX with in situ head

DLS measurement into your process.


  • In situ and contactless measurements: no risk of contamination
  • Robust & Compact : easy to integrate in limited access environment
  • Embedded visible alignment laser: easy installation and accurate positioning
  • Adjustable working distance /scattering angle
  • Cost- & Time-saving : no consumable, no tedious batch sampling


  • In situ process monitoring
  • Instrumental coupling

VASCO-FLEX with Dual Thickness Controller head

Dedicated to dark and highly concentrated solutions (VASCO like)


  • Ideal for concentrated and/or dark suspensions (inks, emulsions, crude oil, etc.)
  • No consumable : indebted sample cell
  • Online measurement option (on demand)
  • Compact : ability to work in confined environment (glove box)


  • Measurement in controlled environments
  • Routine lab measurements

VASCO-FLEX with Thermalized head

When available space becomes an issue.


  • Broad temperature range : 5° to 80°C ; +/-0.05°
  • Compact : ability to work in confined environment (glove box)
  • Compatible with standard 10×10 mm2 cuvette (disposable or QS)
  • No cross contamination, easy sampling
  • Fluorescence filter option
  • Various cuvette options : disposable cell, glass cell, micro-cell, flow cell …


  • Batch sampling measurements
  • Routine lab measurements

VASCO-FLEX with Custom head

Customize your own DLS set up.


  • Lab set up for dedicated and advanced applications
  • On-demand configuration (scattering angle, beams position, Fluorescence filter option , type of cell, monitoring, thermalization, etc)


  • Measurements in specific environments or specific conditions