Brookhaven Instruments is known for providing light scattering instruments that are specifically designed for the characterization of sub-micron particle sizing and polymers. The company has identified the need to create high resolution in the size range of 1 µm and keeping this aspect in mind, it has designed an instrument based on a fractionation method that provides a resolution that exceeds any other method in this range.
BI-DCP Disc Centrifuge Photosedimentometer (DCP) is a high-resolution, digitally controlled particle size distribution analyzer. This advanced analyzer provides high-resolution results in the size range between 0.01 and 30 µm, with standard analysis time of 5 to 30 minutes.
The BI-DCP analyzer integrates a built-in strobe light that is synchronized to the drive circuit to assess the hydrodynamic stability of the sample. Furthermore, a sensor is used to track the disk temperature. The BI-DCP system provides the largest range of speeds, from 500 to 15,000 rpm, allowing an extended range of particle size measurements. Measurement time is reduced by a scanning detector head.
The DCP software provides for instrument control, database management and data analysis. The menu-driven software allows a wide range of report formats.
BI-DCP is supplied with the BI-DSC precision balanced disc made of PMMA that is suitable for non-aggressive solvents, weak acid and base solutions, and other non-aggressive aqueous systems. The BI-DSCR is a polycarbonate disc that is suitable for aggressive solvents, ketones, aldehydes, and strong acid and base solutions.
Common applications for the BI-DCP include:
•Polystyrene, poly (vinyl chloride), and other polymer latexes
•Carbon blacks, metal oxides, and printing ink particulates
Features at a Glance
•High Resolution – Resolution of peaks as close as 13%
•No Calibration – Based on Stoke’s law for centrifugal sedimentation
•Extinction Coefficient Corrections – Allows for quantitative calculation of weight distributions
•Scanning Detector – Significantly reduces measurement time
•Powerful Modeling Software – Predicts optimum experimental method settings which significantly reduces operation time
•Cooling – Prevents baseline drift and improves sedimentation stability
•Digital Temperature readout – Continuous monitoring of temperature
•Option to do Line Start (LIST) or Homogenous Start Method (HOST)
Specifications
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Analysis
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Size range of 0.01 to 30 µm maximum; 0.05 to 10 µm typical for low density particles, 0.01 to 2 µm for high density particles; wide variety of materials dispersed in water and other solvents
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Data System
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Windows computer with printer. Real time graphics and data display, high resolution color (SVGA). Menu driven data analysis and management system, with single copy license and software distribution copy.
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Drive System
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Microprocessor controlled digitally driven electronic motor. Digital readout for setting and monitoring speed. Speed continuously variable from 500 to 15,000 rpm. Speed accuracy and stability better than + 0.01%. Temperature sensor and digital readout. Dual purpose integral strobe.
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Disc Cavity
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Polymethylmethacrylate with stainless steel hub. Dynamically balanced over range of roatational speeds. Spin fluid volume from 10 to 40 mL.
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Power Requirements
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100/115 VAC, 220/240 VAC, 50/60 Hz, 1,000 Watts
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Dimensions
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260 x 500 x 550 mm (HWD)
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Weight
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33 kg
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Certifications
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CE Marked
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