Pentyl Labs provides ASTM D1310 flash and fire point testing using the Tag Open Cup apparatus to measure both the flash point and fire point of liquids under open-cup conditions. This method evaluates how a material behaves when exposed directly to air, making it essential for products that require accurate flammability characterization at moderate to elevated temperatures.
The ASTM D1310 procedure provides two key ignition values:
Flash Point – the lowest temperature at which a liquid emits vapors that briefly ignite when exposed to a flame.
Fire Point – the temperature at which combustion is sustained for at least five seconds.
Because this is an open-cup method, vapors can mix freely with surrounding air. As a result, ASTM D1310 often yields higher temperatures than closed-cup tests and better reflects fire behavior during real-world handling, spills, processing, or accidental exposure.
This method is widely used for:
Petroleum products
Solvents and fuels
Light industrial liquids
Oils and blends that may be aerated during use
Materials that cannot be accurately measured in sealed cups
Manufacturers select ASTM D1310 when they need ignition data that simulates open-air conditions or when evaluating products exposed to heat, friction, or ventilation during use.
Combined flash and fire point data supports:
Hazard classification
SDS development
DOT transportation review
OSHA HazCom documentation
Insurance and risk evaluation
Process safety and manufacturing controls
Fire point values are particularly important for equipment-related safety programs, facility compliance reviews, and industrial risk assessments.
For additional regulatory reference, see OSHA’s flammability guidance:
https://www.osha.gov/hazcom
You can also review the official ASTM D1310 standard here:
https://www.astm.org/d1310-22.html
If your material also requires closed-cup testing or comparison to ASTM D92 or ASTM D93, visit our Flash Point Test Methods Comparison Guide (internal link) to determine the appropriate method.
Pentyl Labs provides accurate, defensible ASTM D1310 flash and fire point results with rapid turnaround and regulatory-ready reporting.
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