Depending on the size of the particles to be analyzed, what form they are in, ie...liquid or solid, and the volume of the sample, different dispersion techniques are employed relative to the required throughput, to provide optimal conditions for image capture.
What is unique, compared to other methods, specifically laser diffraction, and sieve analysis, is the ability to detect particle shape, instead of making the practical, but false assumption, that all particles are spherical.
When you have the ability to measure, and quantify, particle shape parameters, particle size takes on a whole new meaning.
The 500 NANO Analyzer is specifically designed for static, non destructive analysis of low volumes (Down to 1 ml) of very fine powders. The sample is placed in a small cup with a tearable membrane floor.
A special vacuum pump is then used to tear the membrane, and deposit millions of particles on a glass slide, in just a few seconds.
The integrity of the powder is maintained, while agglomerates are gently dissociated, providing good orientation, and natural sedimentation on the glass slide.
WHAT IS UNIQUE COMPARED TO OTHER DIGITAL IMAGING DEVICES
3- PARTICLE SHAPE ANALYSIS ALLOWS FOR NEW OPPORTUNITIES IN R&D, AND QUALITY CONTROL
2-SHAPE INFORMATION ALLOWS FOR BETTER CORRELATION TO EXISTING METHODS
MANY INDUSTRIES HAVE THEIR STANDARDS DEFINED BY SIEVE ANALYSIS. SO ALTHOUGH LASER AND DIGITAL IMAGING PROVIDE FOR MORE COMPREHENSIVE ANALYSIS, THEY STILL NEED TO BE ABLE TO CORRELATE TO SIEVE RESULTS.
REASONS TO TAKE PARTICLE SHAPE IN TO CONSIDERATION
WHAT IS UNIQUE WHEN COMPARED TO LASER DIFFRACTION AND SIEVE ANALYSIS
1- PARTICLE SHAPE AFFECTS THE PERFORMANCE ATTRIBUTES OF THE FINISHED PRODUCT
BESIDES AFFECTING POWDER FLOW AND MIXING PROPERTIES, PARTICLE SHAPE IS CRITICAL IN THE EVALUATION OF MATERIALS LIKE ABRASIVES, WHERE THERE IS REDUCED PERFORMANCE AS THE PARTICLE IS CLOSER TO
NEWLY DEFINE SHAPE PARAMETERS INCLUDE ROUGHNESS, AND BLUNTNESS ANALYSIS IN ABRASIVES, WHERE THE DEVIATION FROM SPHERICITY IS MEASURED, ALONG WITH THE SHAPE OF THE ASPERITIES
LEFT-OCCHIO USES THE CONCEPT OF THE MAXIMUM INSCRIBED VIRTUAL DISC, TO MEASURE THE WIDEST PART OF THE PARTICLE, WHICH WOULD INDICATE WHICH SIEVE APERTURE THE PARTICLE WOULD BE RETAINED BY.
LASER DIFFRACTION DOES NOT HAVE THIS CAPABILITY.
RIGHT-A PICTURE OF A COFFEE GRIND,SHOWS THE PROBLEM WITH USING SIEVE ANALYSIS TO MEASURE THE SIZE OF NON SPHERICAL PARTICLES
AFTER YEARS OF RESEARCH IN OPTICS AND LIGHT, OCCHIO DEVELOPED A SPECIAL MONOCHROMATIC BACK LIGHT TO PROVIDE SUPERIOR PARTICLE DEFINITION. COMPARED TO NORMAL WHITE LIGHT,. ALLOWING FOR THE DETECTION OF PARTICLES BELOW 1 MICRON.
THE BLUE LIGHT SOURCE IS COLLIMATED, AND ACTS LIKE A CALIPER, MEASURING ALL FACETS OF EACH PARTICLE IN HIGH DEFINITION.
Each analysis can be defined as an SOP, so that frequent tests can be run by several operators, with no need for programming, and the same results everytime.
After running an analysis, the comprehensive analytical software packageCALLISTO tm
creates detailed reports, and provides bimodal, as well as three dimensional graphs,
showing shape and size distribution by number, or percentage.
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WITH REMOVEABLE FLOWCELL FOR THE ANALYSIS OF PARTICLES IN SUSPENDED IN LIQUID