Fuel and Lubricant Testing

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ASTM D445 - Kinematic Viscosity of Transparent and Opaque Liquids (and Calculation of Dynamic Viscosity)

We perform viscosity testing by ASTM D445 to measure the kinematic viscosity of liquid petroleum products. ASTM D445 determines the viscosity of liquid petroleum products by measuring the time for a liquid to flow under gravity through a viscometer at a closely controlled temperature. The kinematic viscosity is determined by calculation, and requires measuring the product’s viscosity twice.

Many petroleum products are used as lubricants, and many types of equipment depend on using a lubricant with appropriate viscosity. Additionally, knowing a product's viscosity is important in estimating the optimum storage, handling, and operational conditions of many petroleum fuels. For these reasons, accurately determining viscosity is essential to many product specifications.

We also perform viscosity testing by ASTM D1092ASTM D2161ASTM D2270ASTM D2422ASTM D2532ASTM D2983ASTM D341IP 226IP 71ISO 2909, and ISO 3104. These different test methods use different instruments or procedures or are used for certain sample types. Click on the test method number to learn more about each test.

Contact us today for a quote for viscosity or other fuel testing.

Sample quantity required: 100 ml

ASTM D445 corresponds to ISO 3104 and IP 71.

For additional information on this test method or to purchase a copy of the method, please click HERE to open a new window and visit the ASTM website.