Elcan processes high-quality materials that require strict tolerances on the particle size distribution and other properties. We ensure that all products meet specifications through regular quality assessments. As materials are being processed, our operators deliver samples to our Particle Size Analysis Laboratory, where quality control checks are performed. Quality checks consist of one or more types of particle analysis depending on customer requirements. Our laboratory conducts laser diffraction particle size analysis, air-jet sieving analysis, and RoTap sieving analysis to support screening operations at our facility. We also perform flowability tests, moisture analysis, and bulk density measurements to equip our clients with a robust profile of their material. Our laboratory performs quality tests in accordance with ASTM and ISO methods. Furthermore, when material needs more than just the standard tests, we work with our client to develop quality assurance methods tailored to the client’s and the product’s needs. Our multifaceted approach to quality control gives our clients confidence that their product is within spec. and will perform as expected.
Laser diffraction particle size analysis is the primary test method used to generate particle size distributions (PSDs). At Elcan, we accomplish this by using a Malvern Laser diffraction particle size analysis, the primary test method used to generate particle size distributions (PSDs) n Mastersizer 3000. Laser diffraction analysis uses a laser beam with multiple light sensors housed at various angles relative to the light beam. As particles move through the measurement window, they change the path of the light, which is recorded by laser diffraction. Particle size analysis is the primary test method used to generate particle size distributions (PSDs) depending upon their size so that the Mastersizer can use sensors. The way that particles scatter the light depends upon their size so that the Mastersizer can convert the detector data into a PSD. Typically, PSDs developed using laser diffraction are reported as volume-weighted distributions since the measured data is directly related to the particle size.
The Malvern Mastersizer 3000 can measure “dry” and “wet” samples of most powders. Dry samples are measured by flowing the sample past the measurement window using compressed air to disperse the particles. Wet measurements are taken by first dispersing the particles in a liquid dispersant, then pipetting the mixture into the Mastersizer, which pumps it through the measurement area. It is essential to select an air pressure or liquid dispersant which will separate the individual particles to produce the most accurate results. Using an appropriate feed rate (dry) or concentration (wet); helps with having too few or too many particles passing the measurement window can skew results. Sometimes, pretreatment of a sample with sonication is required if its particles agglomerate easily.
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