Fuels | Verifying ISO 8217 Specifications for Marine Fuel Oils with SVM 3001

Kinematic viscosity, density and CCAI are frequently-determined parameters for marine fuel oils. SVM 3001 with Xsample 610 is the perfect combination for verifying that distillate and residual fuels fulfill ISO 8217 specifications.

Depending on their application field, marine fuels are available in a large variety from low-viscosity distillate fuels up to heavy residual fuel oils such as Bunker C.

To make marine fuels more environmentally friendly, the International Marine Organization (IMO) agreed to limit the sulfur content in all marine fuels to 0.5 % starting in 2020 (IMO 2020). Compared to the previous limit of 3.5 %, this was a significant change that has led to new formulations on the market. Very Low Sulfur Fuel Oils (VLSFO) and Ultra Low Sulfur Fuel Oils (ULSFO) with a maximum sulfur content of 0.5 % and 0.1 % respectively have subsequently gained popularity.
To obtain an IMO 2020-compliant marine fuel, fuel oils with higher and lower sulfur content can be blended.

Marine fuels are specified according to ISO 8217:2017. Basically, they are classified into distillate fuels and residual fuels. The fuel types are divided into different categories. The numbers of the residual fuels indicate their kinematic viscosity at 50 °C.

Marine fuel type ISO 8217 categories
Distillate fuels DMX, DMA, DFA, DMZ, DFZ, DMB, DFB
Residual fuels RMA10, RMB30, RMD80, RME180, 
RMG180/380/500/700, RMK380/500/700


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