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Quantachrome Instruments manufactures laboratory instruments for characterization of porous materials and powders. Our products measure density, pore size, surface area, metal area and water sorption for a wide variety of applications including catal...

Providing researchers with access to millions of scientific documents from journals, books, series, protocols and reference works.

Micromeritics Instrument Corporation manufactures a complete line of particle characterization instruments to measure particle size, surface area, porosity, chemisorption, shape and density.

Porous Materials, Inc. - Worldwide Leader in Porosity Solutions

YouTube is a place to discover, watch, upload and share videos.

Microtrac Inc. - innovative solutions in light scattering technology since 1974 with products to measure particle size, count, and zeta potential

A totally free access materials knowledge base and news service for the engineering, design and materials community worldwide. Content includes the whole materials spectrum of Metals, Ceramics, Polymers and Composites.

The web site of The Johns Hopkins University, a world-class university in Baltimore, Maryland, offering undergraduate and graduate degrees.