ISO 1523:2002

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Determination of flash point — Closed cup equilibrium method

ISO 1523:2002 refers to an International Standard that outlines a method for determining the "flash point" of liquids like paints, varnishes, paint binders, solvents, and petroleum products using a closed cup equilibrium method; essentially, it defines a standardized procedure to measure the lowest temperature at which a liquid gives off enough flammable vapor to ignite when exposed to an ignition source.