Powders, granulars, and liquids, can now be analyzed with extreme precision, using a number of innovative sample transport techniques. For less dense powders, vacuum dispersion, either by itself, or in conjunction with a vibrating platform, are utilized to move the particles in to the field of view. Liquids and slurries, are kept in suspension using magnetic stirrers, while specially designed pumps, draw precise amounts through specially engineered parallel glass slides (flowcell). Our particle measurement systems have superior resolution, compared to laser diffraction, allow for precise analysis of particles as small as 200 nanometers, which makes this technology not only suitable, but preferable for exacting applications like protein aggregate characterization.
A MONOCHROMATIC, COLLIMATED BACK LIGHT, ACTS LIKE A CALIPER, PROVIDING PRECISE PARTICLE DEFINITION
OCCHIO ZEPHYR SERIES DYNAMIC PARTICLE MEASUREMENT SYSTEMS
DIGITAL IMAGING TECHNOLOGY CAN BE ESPECIALLY USEFUL FOR PARTICLE SIZE DISTRIBUTION TESTS, IN CASES WHERE THE PARTICLES ARE TOO SMALL FOR ANALYSIS BY LASER DIFFRACTION, OR WHERE THE ANALYSIS OF PARTICLE SHAPE PARAMETERS IS IMPORTANT.
THE REALTIME CAPABILITIES OF OCCHIOS' PARTICLE CHARACTERISTIC ANALYZERS, ALONG WITH THE ABILITY TO DETECT SHAPE PARAMETERS, AND MAKE DISTINCTIONS BETWEEN LIGHT AND DARK, ALLOW FOR THE ADVANCED ANALYSIS OF PARTICLES IN BOTH LIQUID AND SOLID FORMS
BY OVERLAYING VIRTUAL CIRCLES ON TO PARTICLE IMAGES, QUANTIFIABLE ABRASION PROPERTIES LIKE BLUNTNESS AND ROUGHNESS ARE NOW POSSIBLE. KINETIC MEASUREMENTS OF SLURRIES, AND LENGTH / WIDTH ANALYSIS OF FIBROUS MATERIALS, ARE ALSO POSSIBLE. NEAR PERFECT SIEVE CORRELATION IS ATTAINED BY USING THE MAXIMUM INSCRIBED DISC, TO DETERMINE THE WIDEST PART OF A PARTICLE, WHICH WOULD DETERMINE THE APERTURE SIZE A PARTICLE WOULD FALL THROUGH.
A TELECENTRIC LENS PROVIDES THE SAME MAGNIFICATION LEVEL AT ALL DISTANCES
BY OVERLAYING VIRTUAL DISCS ON TO IMAGES OF ABRASIVE PARTICLES, ABRASIVE PROPERTIES LIKE BLUNTNESS AND ROUGHNESS, CAN BE STUDIED.
USING THE MAXIMUM INSCRIBED VIRTUAL DISC OVERLAY, NEAR PERFECT SIEVE CORRELATION MAY BE ATTAINED. (VARIANCES ARE CAUSED BY SIEVE APERTURE DIAGONALS, WHICH GIVE A FALSE READING)
Occhio Particle size and shape analyzers, are the collaboration of many years of focused research in the fields of optics, lighting, and digital imaging. Using a collimated (parallel beam), and variable, monochromatic backlight, in conjunction with a high speed, telecentric lens camera, and sophisticated software, extremely robust particle definitions are made possible. Newly defined parameters, such as bluntness, luminance, and solidity, are now available, as well as traditional measurement parameters, like length, width, and particle count.
SUITABLE MATERIALS:
LARGER AND MORE DENSE PARTICLES / ITEMS THAT
DISPERSE EFFECTIVELY IN GRAVITY
EXAMPLES: GRAVEL, SHREDDED CHEESE, NAILS
THE BLUE MONOCHROMATIC LIGHT PROVIDES PARTICLE DEFINITIONS BELOW 1 MICRON, WHICH CANNOT BE ACCOMPLISHED WITH THE STANDARD WHITE LIGHT USED BY OTHER DIGITAL IMAGERS
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MORE INFORMATION REQUEST
NEW LDA DISPERSION MODEL FOR
DIFFICULT POWDERS
SUITABLE MATERIALS:
FREE FLOWING AND SLIGHTLY STATIC, AND/OR COHESIVE POWDERS, GRANULARS
TWO SEPARATE MODELS DESIGNED FOR MATERIALS WITH DIFFERENT DISPERSION REQUIREMENTS
All Occhio Particle Analyzers use the same Callisto Software, enabling advanced size and shape detection and measurement on a variety of materials.
Using special mono-chromatic back lighting techniques to obtain superior definition, Occhio Analyzers are able to detect particle shapes and sizes not attainable with standard white lighting.
DISPERSION
It is difficult to take a,"ONE SIZE FITS ALL" approach to sample dispersion. The particles must be physically separated before the are presented to the optics.
The ZEPHYR ESR Analyzer, is designed to provide optimum dispersion for larger, and more dense particles like gravel. The flow rate of the sample is monitored,
and controlled automatically. Standardized SOP's are created for each different sample type, making repeat testing a breeze.
ZEPHYR SERIES MODEL ESR2
VIBRATING HOPPER & GRAVITY DISPERSION
WITH VACUUM ASSIST
VIBRATING HOPPER & VACUUM DISPERSION
LAMINAR FLOWTUBE FOR SAMPLE PRESENTATION
PARTICLES TRAVEL HORIZONTALLY
PAST THE OPTICS
PARTICLES TRAVEL VERTICALLY
PAST OPTICS
THROUGH SIZE SPECIFIC SPACERS
ZEPHYR SERIES MODEL LDA
THE LDA HAS ALL OF THE DISPERSION TOOLS THE ZEPHYR HAS, WITH THE ADDITION OF AN AIR JET AT THE OPTICS ENTRY POINT. THIS KEEPS STATICALLY CHARGED PARTICLES FROM STICKING TO EACH OTHER,AS WELL AS TO THE OPTICS
DIGITAL IMAGING EQUIPMENT FOR PARTICLE CHARACTERIZATION IN LIQUIDS, POWDERS, AND
OCCHIO DIGITAL IMAGE ANALYZERS HAVE THE ABILITY TO DETECT AND QUANTIFY BOTH PARTICLE SIZE AND PARTICLE SHAPE, PAVING THE WAY FOR THE ADVANCED ANALYSIS OF PARTICLES IN BOTH LIQUID AND SOLID FORMS.
CORRELATIONS TO OTHER PARTICLE SIZE ANALYSIS METHODS, LIKE SIEVE ANALYSIS AND LASER DIFFRACTION, ARE SEAMLESSLY EMPLOYED. EVEN SHAPE PARAMETERS LIKE LENGTH, FLATNESS, AND ANGULARITY IN AGGREGATES, OR THE LENGTH OF STRINGY PARTICLES LIKE SHREDDED CHEESE, OR TOBACCO, ARE POSSIBLE.
ONCE A BASIC CORRELATION HAS BEEN ESTABLISHED, THE RESULTS ARE FINE TUNED WITH THE OCCHIO CORRELATION PROGRAM, ALLOWING FOR TURNKEY SOLUTIONS TO PARTICLE CHARACTERIZATION.
