VPS Sees VLSFO Sulfur Disputes More than Double in 2021 by Ship & Bunker News Team Tuesday April 6, 2021 VPS sees the majority of the sulfur non-compliance coming from samples from Europe and the Americas. Image Credit: VPS The percentage of VLSFO samples found to be non-compliant because of their sulfur content has more than doubled in 2021, according to testing company VPS. About 3% of the samples VPS received last year were found to be non-compliant on sulfur levels, and this rate has risen to about 7% so far in 2021, Rahul Choudhuri, managing director of VPS in Singapore, said at Fujairah Bunkering & Fuel Oil Forum 2021 last month.