Does anyone have a good method for measuring the amount of flux applied to a board, on a wave solder machine by a spray drum fluxer. I'm trying to determine volume of flux applied at various drum RPM's. Only method I'm aware of is to weigh a piece of pr-cut mylar, apply flux, then weigh again. I want to use this to be able to baseline the wave solder equipment at the beginning of the shift and whenever a new batch of flux is received. Sounds crazy, but I have noticed differences in spray volume at same drum speeds, and same air pressure. I'm using a Soltec Sigma wave. Any better ideas ? Thanks in advance Al Boulais (603) 337-1253