Definition of nonporous in the Definitions.net dictionary. Latent prints on non-porous surfaces tend to be fragile, so they must be preserved as soon as possible. When referring to wood, most softwoods, such as pine, cedar and redwood, are non-porous. If this definition is to be applied to kitchen countertops, then non-porous countertops possess a feature that doesn’t allow any penetration of air or water that could damage it in the long run. These are mainly smooth surfaces of which the latent print resides on the surface. Hard surfaces are a combination of porous and nonporous materials. Strictly speaking, some tests measure the "accessible void", the total amount of void space accessible from the surface (cf. porous definition: 1. The polymeric material affects the permeability and selectivity of the membrane. Meaning of porous. Common hard-surface materials are stainless steel, solid surface, laminate, porcelain, and a wide variety of tile and ridged plastic materials. The cells are typically smaller, and the grain of the wood is wide and open. The basic definition of non-porous is something that is not permeable to any outside influences such as air, water, and other kinds of fluids. Non-porous woods do not have as many vessels within the wood fibers. Learn more. These specific percentages can differ slightly based on different brands (Caesarstone, Silestone, Cambria, etc. Something that is porous has many small holes, so liquid or air can pass through, especially…. Quartz is a non-porous material. Porous materials such as natural sea sponge or artificial (special weave polyester styrofoam) absorb fluids quickly and maintain fluid absorption until the fluid either evaporates or is manipulated to reduce fluid content. Porosity or void fraction is a measure of the void (i.e. The membrane is a dense film where permeate diffuse through by pressure, concentration, or electrical potential gradient. Non-porous Non-porous membranes are mainly used for reverse osmosis, nanofiltration, or molecular separation in the gas phase. Some of the more common porous surfaces include laminate, granite, and various types of tile and plastic materials. Often overlooked are details such as the material surface … Information and translations of nonporous in the most comprehensive dictionary definitions resource on the web. Non-porous Surfaces. Fabrication of honeycomb-structured porous films from poly(3-hydroxybutyrate) and poly(3-hydroxybutyrate-co-3-hydroxyvalerate) via the breath figures method Meaning of nonporous. ). closed-cell foam).. Information and translations of porous in the most comprehensive dictionary definitions resource on the web. "empty") spaces in a material, and is a fraction of the volume of voids over the total volume, between 0 and 1, or as a percentage between 0% and 100%. Examples of non-porous surfaces include glass, plastics, metals, and varnished wood. 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