ASTM D3343 Test Method for Estimation of Hydrogen Content of Aviation Fuels
5. Procedure
5.1 Determine the density or the API gravity of the fuel sample as described in Practice D1298 - API 2547 - IP 160.
5.2 Determine the temperature at which 10, 50, and 90 % of the fuel are recovered using Test Method D86 - IP 123. Average these three temperatures to obtain the T value (in °C) or the V value (in °F) used in the equations of 3.1.
5.3 Determine the aromatic volume percent of the sample using Test Method D1319 - IP 156.
