New ASTM D6304 – improved water content determination in lubricants and other petroleum products

New ASTM D6304 – improved water content determination in lubricants and other petroleum products

Water content in lubricants and other petrochemical products is a critical parameter that has to be closely monitored in the manufacturing of such commodities and all along the value chain.

The presence of moisture in fuel and lubricants promotes corrosion and engine wear negatively affecting performance and resulting in the plugging of filters. Moreover, moisture can impede the effect of additives and promote growth of deleterious bacterial organisms. Knowing about the water content helps prevent damage to infrastructure and ensure safe operation.

This eLearning explains the straightforward determination of moisture in petroleum samples by coulometric Karl Fischer titration according to the three procedures outlined in ASTM Method D6304. A comparison is given between the procedures to determine which is the most suitable for various  types of samples.

Key learning objectives:

  • Get to know the working principle of coulometric Karl Fischer titration
  • Find the suitable procedure for your sample
  • Understand the advantages of the oven method as per ASTM D6304
  • Avoid side reactions with the oven method
  • Learn about automation possibilities

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More on the speakers

Author headshot

Michael Margreth

Metrohm

Michael Margreth studied chemistry at the University of Applied Science in Muttenz, Switzerland. He joined Metrohm in 2005 as an application specialist and gained titration experience in the application laboratory. Since 2008 he mainly focuses on Karl Fischer titration and the determination of water.

More on the moderators

Author headshot

Tom Lynch CChem FRSC

International Labmate Ltd

Tom has 35 years of experience in the petroleum industry, specialising in the delivery of forensic and problem solving /method development capabilities for BP Fuels and Lubricants businesses globally. He was also a member of the BP Science Council representing Analytical Science and led a BP wide Analytical Science network.Tom has published over 30 citable papers, 4 book chapters and has given over 60 presentations at conferences. He is a past Vice President of the Royal Society of Chemistry (RSC) Analytical Division and a past Chairman of the RSC Separation Science Group. In addition, Tom is a recipient of the Silver Jubilee Medal by the Chromatographic Society and a technical achievement award by the Energy Institute.

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