Paragon Laboratories
12649 Richfield Ct.
Livonia, MI 48150
734.462.3900 Phone
Paragon Laboratories 4-D

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

ASTM D975, 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 Table 1 requirements.

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


ASTM D975-16a Table 1, Approved October 1, 2016

Test Method Reference Min. Sample Vol. Price ISO 17025
Flash Point ASTM D93 75 mL $47.00
Water and Sediment ASTM D1796 50 mL $57.00
Kinematic Viscosity, at 40 °C ASTM D445 20 mL $47.00
Ash ASTM D482 150 mL $55.00
Sulfur* ASTM D2622[1] --- --- ---
Cetane Number ASTM D613 1000 mL $255.00
Total Cost     $461.00  


*Procedures we do not currently perform.

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