LONDON: Russian oil quality at the Baltic port of Ust-Luga was approaching normal levels on Friday after being contaminated with organic chlorides for more than two weeks, trade sources said on Friday.

Some oil tanks in Ust-Luga have already received normal quality crude with organic chloride content of below 10 parts per million (ppm).

However, the latest tanker that loaded at Ust-Luga on Friday still had an organic chloride content 3.5 times above the norm at 35 ppm.