ASTM D3701

ASTM D3701 – Standard Test Method for Thermal Diffusivity by the Flash Method

Description:

Significance and Use

5.1 The combustion quality of aviation turbine fuel has traditionally been controlled in specifications by such tests as smoke point (see Test Method D1322), smoke volatility index, aromatic content of luminometer number (see Test Method D1740). Evidence is accumulating that a better control of the quality may be obtained by limiting the minimum hydrogen content of the fuel.

5.2 Existing methods allow the hydrogen content to be calculated from other parameters or determined by combustion techniques. The method specified provides a quick, simple, and more precise alternative to these methods.

Scope

1.1 This test method covers the determination of the hydrogen content of aviation turbine fuels.

1.2 Use Test Methods D4808 or D7171 for the determination of hydrogen in other petroleum liquids.

1.3 The values stated in SI units are to be regarded as standard. The preferred units are mass percent hydrogen.