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API MPMS Chapter 10.6 (2013): Standardizing Water and Sediment Determination in Fuel Oils by Centrifuge
A detailed technical review of the laboratory centrifuge method for measuring water and sediment in fuel oils, covering scope, key technical requirements, and compliance considerations.
The API Manual of Petroleum Measurement Standards (MPMS) serves as the global benchmark for accurate and consistent hydrocarbon measurement. Chapter 10.6, specifically the 2013 edition, establishes the definitive laboratory procedure for determining the volume percent of water and sediment in fuel oils using the centrifuge method. Frequently harmonized with ASTM D4007, this standard is crucial for quality assurance, refinery operations, and commercial custody transfer agreements worldwide.
Scope and Introduction
API MPMS Chapter 10.6 (2013) covers the laboratory determination of water and sediment in both distillate and residual fuel oils within a range of 0% to 30% by volume. Unlike the distillation method (API MPMS Chapter 10.5), which precisely measures water content by vaporization and condensation, the centrifuge method provides an apparent result by physically separating heavier contaminants using centrifugal