We perform flash and fire point testing on solvents and other liquids by ASTM D1310, which uses a tag open-cup apparatus. This method is intended for liquids with flash points between 0 and 325°F (-18 and 165°C) and fire points up to 325°F. When applied to paints and resin solutions that tend to skin over or that are very viscous, this test gives less reproducible results than when applied to solvents.
The flash point and fire point are physical properties that can be used to define their flammability hazards. The flash point may be used to classify materials in government regulations.
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