1.1 This document provides a consistent methodology to test and evaluate the performance of friction (drag) reducers in straight, smooth circular conduits. This standard includes only smooth-walled tubing and excludes any rough-walled tubing.
1.2 The International System of Units (SI) is used in this Technical Report. However, testing data acquisition can be conducted using US customary units (USC).
1.3 Factors included in Annex A Table A.1 permit conversions of USC units to SI units or SI units to USC units.
