Testing requirements for ASTM D6751-11b and the rationale for each analysis.
Parameters | Test Method | Indicator Of | Possible Field Problems |
| Acid Number | D664 | Unreactive acids, oxidized fuel | Corrosion, clogged filters |
| Calcium & Magnesium | EN14538 | Processing problems | Filter plugging & engine deposits |
| Carbon Residue | D4530 | Carbon deposition, adulteration | Excessive smoking, increased particulates |
| Cetane Number | D613 | Ignition quality | Poor engine performance, engine knock |
| Cloud Point | D2500 | Crystal formation | Fuel filter plugging, lack of cold weather operability |
| Cold Soak Filterability | D7501 | Feedstock type / processing issues | Filter plugging |
| Copper Strip Corrosion | D130 | Unreacted acids | Corrosion of copper, brass & bronze fuel system parts |
| Distillation Temperature | D1160 | Impurities or adulteration | Poor engine performance |
| Flash Point | D93 | Unreacted Alcohol | Fire risk during handling & storage |
| Free Glycerin / Total Glycerin | D6584 | Unreacted or partially reacted oil or fat | Injector deposits, plugged filters |
| Kinematic Viscosity 40C | D445 | Adulterants, oxidation | Poor engine performance, plugged fuel filters or fuel system |
| Methanol Content | EN14110 | Unreacted alcohol | Fire risk during handling and storage |
| Oxidation Stability | EN15751 | Overall product quality | Fuel system deposits, filter plugging |
| Phosphorus Content | D4951 | Contaminated feedstock | Damaged or malfunctioning catalytic converters |
| Sodium & Potassium | EN14538 | Processing problems | Filter plugging and engine deposits |
| Sulfated Ash | D874 | Presence of abrasive solids, unremoved catalyst | Injector, fuel pump, piston and ring wear, filter plugging and engine deposits |
| Sulphur | D5453 | High sulphur feedstock, adulterant | Engine wear, increased emissions |
| Water and Sediment | D2709 | Workmanship / over all production quality | Poor engine performance, fuel filter plugging. |