ASTM D2196-2018 "Standard Test Method for Rheological Properties of Non-Newtonian Materials by Rotational Viscometer" provides a set of test methods operating in 600 mL low-morphology griffins for evaluating the apparent viscosity, shear thinning, and thixotropic properties of non-newtonian fluids in the shear rate range from 0.1 to 50 s-1. The purpose of this standard is to ensure international conformity of test results. All values are expressed in SI units. The values provided in the notes are for reference. Users are required to establish appropriate safety, health, and environment specifications when applying this standard, and confirm the applicability of regulatory restrictions. This standard has been developed as an internationally recognized principle of standardization in accordance with the principles of the World Trade Organization Technical Barriers to Trade Committee.