1.2''The range of kinematic viscosity capable of being measured by this test method is from 2'''mm²/s to 2500'''mm²/s (see Fig. 1). The range is dependent on the tube constant utilized. The temperature range that the apparatus is capable of achieving is between 20 ''C and 150 ''C, inclusive. However, the precision has only been determined for the viscosity range; 2'''mm²/s to 478'''mm²/s at 40 ''C for base oils, formulated oils, diesel oil, biodiesel, and biodiesel blends; 3'''mm²/s to 106'''mm²/s at 100 ''C for base oils and formulated oils; 25'''mm²/s to 150'''mm²/s at 40 ''C and 5'''mm²/s to 16'''mm²/s at 100 ''C for used lubricating oils; 25'''mm²/s to 2500'''mm²/s at 50'''''C and 6'''mm²/s to 110'''mm²/s at 100'''''C for residual fuels. As indicated for the materials listed in the precision section.

FIG. 1''Houillon Viscometer Typical Viscosity Range of Tube Constants

Note 1:''Viscosity range of a Houillon tube is based on most practical flow time of 30'''s to 200'''s.

1.3''The values stated in SI units are to be regarded as standard. No other units of measurement are included in this standard.

1.4''This standard does not purport to address all of the safety concerns, if any, associated with its use. It is the responsibility of the user of this standard to establish appropriate safety, health, and environmental practices and determine the applicability of regulatory limitations prior to use. For specific warning statements, see Section 7.

1.5''This international standard was developed in accordance with internationally recognized principles on standardization established in the Decision on Principles for the Development of International Standards, Guides and Recommendations issued by the World Trade Organization Technical Barriers to Trade (TBT) Committee.