No. 4-D | Diesel Fuel Oil Testing According to ASTM D975-21

ASTM D975-21, Standard Specification for Diesel Fuel Oils, defines and provides specifications for No. 4-D fuel oil.

No. 4-D is a heavy distillate fuel, or a blend of distillate and residual oil, used for low and medium speed diesel engine applications involving primarily constant speed and load.

Paragon is capable of performing a majority of the analysis related to the testing of No. 4-D fuel oil according to ASTM D975-21 Table 1 requirements.

Procedures included on our A2LA Scope of Accreditation to ISO/IEC 17025:2005 are designated as such.

ASTM D975-21 Table 1, Approved August 1, 2021

Service	Method Reference	Min. Sample Vol.	Price	ISO 17025
Flash Point	ASTM D93	150 mL	$60.00
Water and Sediment	ASTM D1796	100 mL	$75.00
Kinematic Viscosity, at 40 °C	ASTM D445	20 mL	$60.00
Ash	ASTM D482	150 mL	$75.00
Sulfur* [A]	ASTM D2622	40 mL	$104.00	---
Cetane Number	ASTM D613	1000 mL	$322.00
Total Cost		1460 mL	$696.00

*Procedures we do not currently perform.

Footnotes:
[A] ASTM D2622 is listed in ASTM D975-21 as the referee method for sulfur analysis on S5000 grades. ASTM D5453 can be used as an alternative test procedure. Section 5.1.8 of ASTM D975-21 states that ASTM D5453 is appropriate for all grades of diesel fuel oil. Paragon currently offers analysis by ASTM D5453.