Several companies(PACE, Impell) offer flux filtration systems for use 
within the plant, no venting to the outside required.  These systems 
consist of three filters: a prefilter to filter out the large particles, a 
HEPA type filter to remove the finer particles and a carbon filter to 
eliminate the smell.  We presently use these fume filtration systems on all 
of our work benches for hand soldering and have larger units on the 
reflow/glue cure ovens and two of our wave soldering systems.  This 
eliminated the need to put holes in the roof of the facility(they always 
leak) and we are well in advance of any EPA requirements about exhaust.  
Venting inside also reduces the amount of make-up air required to be 
introduced into the facility, reducing air conditioning costs and the need 
to humidify the air.

Contact me if you have any questions

Ed Holton
[log in to unmask]
810-608-7471

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