LONDON/MOSCOW, May 7 (Reuters) – The quality of Russian oil from the Baltic Sea port of Ust-Luga has improved significantly over the past day but is still fluctuating sharply, two Russian oil buyers familiar with operations said on Tuesday.

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The Russian government has promised to fix the problem by May 7 after buyers discovered large volumes of Russian oil had been contaminated with organic chlorides.

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“It is improving although it is still not up to normal standards,” one buyer said..

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