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  4. Brookhaven Instruments - 90Plus

Brookhaven Instruments - 90Plus

Manufactured by  Brookhaven Instruments
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Rapid, Reliable and Accurate Analysis

The new 90Plus particle sizer incorporates all you need for fast, routine, sub micron measurements. Based on the principles of Dynamic Light Scattering (DLS), most measurements only take a minute or two. The built-in PC computer has ample power for the Windows™-based software. Choose from the standard 35 mW laser for strong scatterers, or the avalanche photo diode for weak scatterers. And, at the time of manufacture, or as a future upgrade, add the BI-Zeta option for zeta potential measurements.

Two Scattering Angles:
Most measurements will be made at the 90° scattering angle, however, the user may select the 15° detection angle where measurements are more sensitive to larger particles.
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Features of 90Plus

Features Include

  • Rapid and accurate particle size distributions
  • Multimodal & unimodal size distribution software
  • Range <1 nm to 6 µm
  • Easy to use Windows™ software
  • Customizable reports, SPC charts
  • Ideal for fast, routine sizing applications in research or quality control
  • High power 35 mW diode laser
  • Dynamic light scattering at 90° and 15°
  • Compact bench top unit, complete with printer
  • Optional zeta potential modules available
  • FOQELS module for sizing in concentrates available
  • Molecular weight determination

Typical Applications: Many everyday industrial processes and products involve dispersions. The dispersed phase is often in a state of fine subdivision. The technology to produce these dispersions, to ensure that they perform according to specifications and to solve problems which may arise in production or use, requires a knowledge of the particle size. The 90Plus can handle virtually any type of submicron sample suspended in, or dissolved in, a liquid. Some examples are

  • Polymer latexes
  • Pharmaceutical preparations
  • Oil/Water and Water/Oil emulsions
  • Paints and pigments
  • Inks and toners
  • Cosmetic Formulation
General Specifications
Depth 445 mm
Height267 mm
Width 625 mm
Weight37 kg
Additional Specifications

Size Range: <1 nm to 6 µm depending on refractive index, concentration & scattering angle
Precision: ±1% typically
Sample Type: Most colloidal-sized materials, suspended in any clear liquid
Sample Volume: 1 to 3 mL. New: 10 µL small-volume cells
Temperature Control: 6 °C to 100 °C, ±0.1 °C, active control. No external circulator required
Laser : 35 mW, solid state, standard
Scattering Angles: 15° & 90°
Data Presentation: Average & width, lognormal fit, and multimodal size distribution standard
Correlator: Brookhaven TurboCorr, multitau, research grade with 510 channels, covering the equivalent of 1010 linearly-spaced channels, 100% efficiency, real-time operation over the entire delay-time range
Computer: Built-in PC. Windows™ Software included. Check with factory for latest specifications. External computer optional.
Printer: Color inkjet, standard. Others available.
Monitor: LCD
Power Requirements: 100/115/220/240 VAC, 50/60 Hz, 300 Watts
Environmental Charact.:
Temperature 10 °C to 75 °C
Humidity 0% to 95%, non-condensing
Certificates: CE Certified

*Weight excluding monitor and printer
*Dimensions excluding monitor and printer

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