Brookhaven Instruments NanoBrook 90Plus

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• Rapid and accurate particle size distributions • Multimodal & unimodal size distribution software • ISO 13321 & ISO 22412 compliant results • Range: 2 nm to 6 µm • Customizable reports • Ideal for fast, routine sizing applications in research or quality control • High power 35 mW diode laser • Dynamic light scattering at 90° • Temperature control: -5 °C to 110 °C • Compact bench top unit, USB connection

Features at a glance

  • Rapid and accurate particle size distributions
  • Multimodal & unimodal size distribution software ISO 13321 and ISO 22412 compliant results
  • Range: > 0.3 nm to 10 µm
  • Customizable reports Ideal for fast, routine sizing applications in research or quality control
  • High power 35 mW diode laser
  • Dynamic light scattering at 90°
  • Temperature control: -5 °C to 110 °C
  • Compact bench top unit, USB connection

Principles of Operation Dilute suspensions, on the order of 0.0001 to 1.0% v/v are prepared, using suitable wetting and/or dispersing agents. A small ultrasonicator is sometimes useful in breaking up loosely-held agglomerates. Two or three mL of suspension are required to make the measurements. Disposable, acrylic square cells are used for aqueous and simple alcohol suspensions. Disposable, glass round cells with reusable Teflon stoppers are used for aggressive solvent suspensions. Just a few minutes are required for the sample and cell to equilibrate with the actively controlled temperature environment inside the NanoBrook 90Plus. A square glass cell is available if desired and special small-volume cells may be used to reduce the volume of material needed to just 50 µL or 10 µL. For aqueous samples the 50 µL is a disposable cuvette. In all cases the sample is recoverable. For very small particles the highsensitivity BI-APD detector is invaluable.

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