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  • ASTM D5481 Apparent Viscosity At High Temperature And High Shear Rate By Multicell Capillary Viscometer HTHS

    ASTM D5481 Apparent Viscosity At High Temperature And High Shear Rate By Multicell Capillary Viscometer HTHS

    High-Temperature and High-Shear Rate Apparent Viscosity Tester (HTHS) covers the laboratory determination of high-temperature high-shear (HTHS) viscosity of engine oil at a temperature of 150℃ using a multicell capillary viscometer containing pressure, temperature, and timing instrumentation. The shear rate for this test method corresponds to an apparent shear rate at the wall of 1.4 million reciprocal seconds (1.4 3 106s-1).This shear rate has been found to decrease the discrepancy between this

    ASTM D5481 HTHS High Temperature and High Shear Rate
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