T/CSP 14-2024 Particle Technology Interlaboratory Comparison Guide Dynamic Light Scattering Instrument Particle Size Detection

Scope

Scope: This document describes the method for inter-laboratory comparison of particle size detection using dynamic light scattering instruments, including the design of the comparison plan, data processing, and result evaluation. This document is applicable to quality control activities of particle size detection with dynamic light scattering instruments, and measurement audits and proficiency tests can also refer to this document. Main technical content: The size, shape, surface characteristics, and other parameters of materials will significantly affect their physical and chemical properties, so it is necessary to conduct rigorous and accurate detection of the particle size of nanomaterials. Dynamic light scattering is a method for measuring the hydrodynamic particle size of nanometer and sub-micron particles, which is widely used in the particle size analysis of nanomaterials and is also an important aspect of nanomaterials research. The inter-laboratory comparison of particle size detection with dynamic light scattering instruments is an activity in which laboratories use such equipment to detect the particle size of nanometer and sub-micron particles. By comparing the differences between the measured values and the specified values, it can be determined whether the participating laboratories need to pay attention to the reasons causing these differences. Therefore, it is very important to select appropriate criteria for result evaluation.

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