1.1 The purpose of this guide is to define a test procedurefor applying the laser diffraction (LD) method to estimate anaverage droplet size distribution that characterizes the flux ofliquid droplets produced by a specified spray generation deviceunder specified gas co-flow conditions using a specified liquid.The intended scope is limited to artificially generated sprayswith high speed co-flow. The droplets are assumed to be in thesize range of 1 to 2000 µm in diameter and occur in sprays thatare contained within a volume as small as a few cubiccentimetres or as large as a cubic metre. The droplet sizes areassumed to be distributed non-uniformly within the sprayvolume.
