Test Description

Method

Required Tests:

Composition of Natural Gas by Gas Chromatography. Includes: Hydrogen, Nitrogen, Oxygen, Carbon Monoxide, Carbon Dioxide, Argon, Helium, Methane, Ethane, Propane, Iso–butane, n–Butane, Iso–pentane, n–P

ASTM D 1945.a

Hydrocarbon Dewpoint (client must provide measurement at sampling point)

Calculated.1

Calorific Value and Specific Gravity of Gaseous Fuels

ASTM D 3588.a

Higher Heating Value (HHV), as Btu/scf and as Btu/lb.

ASTM D 3588.b

Lower Heating Value (LHV), as Btu/scf and as Btu/lb.

ASTM D 3588.c

Molecular Weight

Calculated.2

Specific Gravity at 59°F and 1 atmosphere

ASTM D 3588.d

Density

Calculated.3

Total Sulfur in Petroleum Gas by Micocoulometry, (Condensables)

ASTM D 3246

Water Vapor Content (Moisture Content) of Gaseous Fuels by Measurements of Dew Point Temperature

ASTM D 1142