Darkroom chemistry fumes are heavier than air. In the darkroom I had ages ago, a 6x9 foot sized room, I fitted a light-baffled exhaust fan of medium size at knee height to the side of the development chemistry work table and had two air inlets with micron filters on them at just below eye level on the facing wall opposite the enlarger and table. Another smaller light-baffled exhaust fan was mounted at the top corner of the room to help remove hot air.
This worked extremely well, and was similar to what the photofinishing lab I worked in had, in concept, although there the ventilation system was much more sophisticated. I didn't have room for a galley style wet and dry room as you propose ... that extra 2 feet makes a big difference! I didn't have running water in the darkroom ... the sink was in the next room. I segregated the enlarger from the wet table with a plexiglass barrier to prevent chemistry from splashing over to the dry side. Godfrey On Sep 25, 2007, at 9:17 AM, Scott Loveless wrote: > To those of you who have or have had a dedicated darkroom, how is/ > was it > ventilated? The darkroom plans are coming along, but I'm stuck on > vent > placement and whether I should include a fan blowing in, as well. > Currently, I'm thinking about an exhaust fan at about chest level, > centered on the wall over the sink. Do you think another fan blowing > into the room might help cut down on dust by providing some positive > pressure? > > FWIW, the room will be 8x8, in the basement, with a galley-style > layout > - a wet side opposite a dry side with space down the middle from the > door to the opposite wall. -- PDML Pentax-Discuss Mail List PDML@pdml.net http://pdml.net/mailman/listinfo/pdml_pdml.net
