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Filtration – Pore size, pore volume, poreshape, and pore tortuosity are of interest tofilter manufacturers. Often, pore shape hasa more direct effect upon filtration than pore size because it strongly correlates with filtration performance and fouling. Construction Materials – Diffusion, permeability, and capillary flow play important roles in the degradation processes in concrete, cement, and other construction materials. Aerospace – Surface area and porosity ofheat shields and insulating materials affectweight and function. Fuel Cells – Fuel cell electrodes requirecontrolled porosity with high surface areato produce adequate power density.

Automated Mercury Porosimeters - 30867 Typical AutoPore IV Applications

Ceramics – Pore area and porosity affectthe curing and bonding of greenware andinfluence strength, texture, appearance, and density of finished goods. Geoscience

AutoPore IV Advantages

– Porosity is important ingroundwater hydrology and petroleum exploration because it relates to the quantityof fluid that a structure can contain as wellas how much effort will be required to extract it. Pharmaceuticals – Porosity and surfacearea play major roles in the purification, processing, blending, tableting, and packaging of pharmaceutical products as well as a drug’s useful shelf life, its dissolution rate, and bioavailability. •Ability to measure pore diameters from 0.003 to 360 µm •Available with two low- and one high-pressure ports or four low- and two high-pressureports for increased sample throughput •Available in 33,000 psi or 60,000 psi models •Quiet, high-pressure generating system •Upgradeable without the need for more lab space •Enhanced data reduction package; includes tortuosity, permeability, compressibility,pore-throat ratio, fractal dimension, Mayer-Stowe particle size, and more •Equilibration by sample-controlled, rate of intrusion •Operates in scanning and time- or rate-equilibrated modes•Collects extremely high-resolution data; better than 0.1 µL for mercury intrusion andextrusion volume•Controlled evacuation prevents powder fluidization Adsorbents – Knowledge of pore area,total pore volume, and pore size distribution is important for quality control of industrialadsorbents and in the development of sepa-ration processes. Porosity and surface area characteristics determine the selectivity of an adsorbent. Catalyst – The active pore area and porestructure of catalysts influence production rates. Limiting the pore size allows only molecules of desired sizes to enter and exit, creating a selective catalyst that will produceprimarily the desired product. Paper – The porosity of print media coatingis important in offset printing where it affects blistering, ink receptivity, and ink holdout. Medical Implants – Controlling the porosityof artificial bone allows it to imitate realbone that the body will accept and allowgrowth of tissue. Electronics – By selecting high surfacearea material with carefully designed porenetworks, manufacturers of super-capacitorscan minimize the use of costly raw materials while providing more exposed surface area for storage of charge.