TrusTec® PRF Octane Blend No. 98 is a primary reference fuel with 98% isooctane and 2% n-heptane used in determining octane rating.
TrusTec® PRF Octane Blend No. 98 primary reference fuel meets the requirements outlined in ASTM D-2699 and ASTM D-2700 for octane testing. TrusTec® PRF Octane Blend No. 98 is a blend of 98% isooctane and 2% n-heptane.
Specific Gravity at 60/60 °F :0.6950 – 0.6970
Composition, vol %
Isooctane : 97.70 – 98.30
n -Heptane : 1.70 – 2.30
Improved fuel performance
Reduced engine wear and tear
Consumer confidence in advertised octane
Development of new and improved fuels
Volatile or Unstable Octane Value in Reference Fuel
Gasoline Octane analysis
Knock resistance calibration
Veriofication of Octane Levels
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