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TrusTec® PRF Octane Blend No. 92 is a primary reference fuel with 92% isooctane and 8% n-heptane used in determining octane rating.
TrusTec® PRF Octane Blend No. 92 primary reference fuel meets the specifications outlined in ASTM D-2699 and ASTM D-2700 to measure octane rating. The reference fluid is composed of 92% isooctane and 8% n-heptane.
Specific gravity at 60/60 °F: 0.6950–0.6970
Composition, vol. %:
Isooctane: 91.70–92.30
n-Heptane: 7.70–8.30
Laboratories and refiners require reliable reference fuels to accurately test octane levels.
Octane fuel analysis
Petroleum refineries
Laboratory testing
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