This document details the test procedures, test results and team conclusions for the IPC Cleaning and Cleanliness Testing Program, Phase 3, Low Solids Flux in Ambient Air. This effort has been part of a multi-stage program to investigate material and process alternatives to the use of chlorofluorocarbons (CFCs) in electronics manufacturing. This Phase 3 effort has been dedicated to characterizing the cleanliness aspects of low solids fluxes, sometimes referred to as "no-clean" fluxes. Not available in electronic format. 163 pages. Released November 1994.