HYDROGEN CONTENT OF AVIATION FUELS: ASTM D3343
EXPLANATION
This is an empirical method based on calculations and is applicable to aviation gasolines and aircraft turbine and jet engine fuels.

TEST SUMMARY
The calculations are done based on the correlationship between hydrogen content of a fuel and its distillation range, API gravity, and its distillation range. The correlation is not accurate when the values of the variables used in the equation are within one standard deviation of the mean, but is useful up to two standard deviations of the mean.

TEST PRECISION
This test method has a repeatability of 0.03 % and a reproducibility of 0.10 %. The standard error of estimate for hydrogen content of all fuels is 0.20 % and for aviation type fuels is 0.16 %.