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SAE AS9968 Rev A

Current Revision

Laboratory Viscosity Measurement of Thickened Aircraft Deicing/Anti-icing Fluids with the Brookfield LV Viscometer

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This document describes a standard method for measuring the viscosity of thickened (AMS1428) Type II/III/IV Aircraft Deicing/Anti-icing Fluids. The determination of viscosity for a Non-Newtonian fluid is very sensitive to shear and differences in sample chamber geometry. Even slight differences can have a large effect on measurement results. The test parameters and associated error for this standard are applicable to the Brookfield LV viscometer. A Brookfield LV or equivalent viscometer shall be used. To be considered equivalent, an alternate viscometer must demonstrate statistically equivalent performance, i.e., accuracy and precision when testing thickened (AMS1428) fluids using the same test parameters and conditions.Test parameters and conditions outside of the ranges described within this standard may be used only if they meet minimum limits for precision and accuracy established for the Brookfield LV viscometer. To compare viscosities, the same test parameters and conditions (including spindle number, rotation speed, sample volume and container type, sample temperature, and measurement duration) shall be used.

SDO SAE: SAE International
Document Number AS9968
Publication Date July 23, 2021
Language en - English
Page Count 9
Revision Level A
Supercedes
Committee
Publish Date Document Id Type View
July 23, 2021 AS9968A Revision
July 22, 2014 AS9968 Revision