ASTM D2880 Standard Specification for Gas Turbine Fuel Oils
6. Test Methods
6.1 The requirements enumerated in this specification shall be determined in accordance with the following ASTM methods except as noted:
6.1.1 Flash Point - Test Methods D93, except where other methods are prescribed by law. For all grades, Test Method D3828 may be used as an alternate with the same limits. For Grades No. 1-GT and No. 2-GT, Test Method D56 may be used as an alternative with the same limits provided the flash point is below 93°C and the viscosity is below 5.5 mm2/s at 40°C. This test method will give slightly lower values. In case of dispute, Test Method D93 shall be used as the referee method.

6.1.2 Pour Point - Test Method D97. For all grades, the automatic Test Methods D5949, D5950, or D5985 can be used as alternates with the same limits. In case of dispute, Test Method D97 shall be used as the referee method.

6.1.3 Water and Sediment - Test Method D2709 is used for Grades 0-GT, 1-GT, and 2-GT. Test Method D1796 is used for Grades 3-GT and 4-GT.

6.1.4 Carbon Residue - Test Method D524.

6.1.5 Ash - Test Method D482.

6.1.6 Distillation - Test Method D86.

6.1.7 Viscosity - Test Method D445.

6.1.8 Density - Test Method D1298 or D4052.

6.1.9 Sulfur - Test Method D129, Test Methods D1552, D2622, and D4294 can also be used for all grades. In addition, Test Method D1266 can be used for Grades No. 0 and No. 1, but only with samples having sulfur contents of 0.4 mass percent and less (down to 0.01 %). Test Method D129 is the referee sulfur test method for D2880.

7. Keywords
7.1 petroleum and petroleum products; fuel oils; gas turbine; specification