Glassware

Precipitation index for lubricating oils and black products

Centrifuge ampoule

  • Pear-shaped or conical
  • Several sizes available
  • Standard test method for determining the precipitation index of lubricating oils and black products

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ASTM D 91: an indispensable standard for oil precipitation

This test method covers the determination of the precipitation index of base oils and black oils in steam cylinders, and can be used for other lubricating oils.
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