Insight

pathlength's effect on scattering

Why are DLS Measurements at High Concentration Difficult?

Despite the versatility of the DLS technique, there are several important considerations that cannot be ignored when using light scattering to characterize high-concentration solutions.

Applications: DLSPolymersSample Prep
Instruments: NanoBrook SeriesBI-200SM

Why is Ionic Strength Relevant to DLS Measurements?

The measurement of particle size by dynamic light scattering (DLS) is heavily dependent on the stability of materials being investigated. Interactions between simple, spherical, colloidal particles are most frequently described by a balance between attractive and repulsive interactions.

Applications: ColloidsDLSHigh SaltPolymersZeta
Instruments: NanoBrook SeriesBI-200SM

Data analysis and distribution weighting: FAQ for DLS users

Dynamic Light Scattering (DLS) is a popular technique for obtaining size distributions of dispersible colloidal particles as well as other nanomaterials. As with all other light scattering based techniques, the intensity of scattered light is strongly skewed towards larger particles, something that must be considered when analyzing samples with two or more major constituents.

Applications: DLS
Instruments: NanoBrook SeriesBI-200SM

Guide to Making Useful Measurements of Monoclonal Antibodies (mAbs) with Dynamic Light Scattering

Summary Dynamic light scattering (DLS) is a powerful technique that is amenable to measurement of biological samples, particularly proteins and biopolymers. One of the fastest growing classes of pharmaceutically active biologics are antibodies. These highly versatile proteins are used as the major functional element in immunoassays and other rapid diagnostics, in vaccine production, and as […]

Applications: BiopharmaDLSProteins
Instruments: NanoBrook SeriesBI-200SM

The X-ray Disc Centrifuge – A Unique Particle Sizing Technique

Summary Disc centrifuges fractionate particles according to both size and density, making them ideal for high-resolution particle sizing. X-Ray based detection further simplifies the process of calculating a particle size distribution from a centrifugation-based instrument, eliminating optical corrections and approximations.  This has been shown to be especially relevant for metal particles and metal oxide, which […]

Applications: Sizing
Instruments: BI-XDCBI-DCP
image of Zeta PALS

ZetaPALS Brochure

Zeta Potential & Particle Size Analyzer For Measurements In: Solvents High Salt Oily or viscous media Near the isoelectric point 1,000x more sensitive than other techniques ZetaPALS: A Whole New Concept For measurements of low mobility, the unique, Brookhaven Instruments ZetaPALS is the answer. There is nothing else like it. With concepts developed at Bristol […]

Applications: Zeta
Instruments: NanoBrook Series

Zeta potential measurement of limestone in seawater by Phase Analysis Light Scattering

Abstract Measurements of limestone in 100% seawater (1.15M ionic strength), 50% seawater, and 25% seawater were conducted on the Brookhaven Instruments NanoBrook ZetaPALS. Below is the procedure for preparing these samples as well as the measurement parameters used in their analyses. Introduction Zeta Potential is relatively easy to measure in cases of high charge and […]

Applications: High SaltOil RecoveryPetrochemicals
Instruments: NanoBrook Series
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