A long debate may ask “which is superior,” but this would miss the point. Therefore, it is possible to fine-tune them to particular needs.Ĭonversely, enclosed light scattering instruments typically do not permit reconfiguration of the correlator layout and, although they might allow two or more presets, this does not amount to fine-tuning. In a goniometer light scattering system, the user can select the layout of the correlator and preset the distribution of the available delay channels over the desired time range. Nevertheless, correlators utilized in goniometer based and enclosed light scattering systems also diverge noticeably. Additionally, the correlator must supply a broad array of time delays and yield a fairly high quantity of delay channels to generate the required resolution. Among modern instruments, either a technological approach needs to be equipped with a digital correlator able to transform photon counts into the correlation function, which is the foundation for all quantifications generating size data. Or both instruments, Dynamic Light Scattering (DLS), is the fundamental technology being implemented. It is thus valuable to collate the strengths and weaknesses of these two technological approaches as a way of determining the most suitable instrument for the task. When the acquisition of a new instrument for particle sizing is being considered, two options are presented: a goniometer based or an enclosed light scattering instrument. Sponsored by Brookhaven Instruments Corporation Jun 11 2019
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