Hazing

[dhawley]

I know there was discussion about the use of Haze and the effects on those with upper respiratory issues. We are presently using Reel EFX DF-50 Diffusion Haze. We pre haze before the service just enough to give us the look we need for video. We have been utlizing for several months without issue but today had a choir member get rushed to the hospital with an "asthma concern with asthmatics. Need some advise on this issue as we do not want to lose the effect on our video but first and foremost do not want to have someone die due to an asthma attack. For info the machine is on our catwalk facing away form the stage and our fresh air circulation turns the air over every 10 minutes in the sanctuary.The choir also has extra AC vents over them to help cut down on the heat generated on stage by the lighting.Thanks for the input. Dave

[theatre4jc]

If she has been in the choir for a long time and then one day had an attack I would assume that if you didn't run the hazer like triple the thickness then that was not the cause. I don't want to say haze cannot set off an attack, but from my experience and personal research (sorry didn't save the links) haze does not typically cause attacks. The data I came across led me to believe that if someone was going to have an attack it would have happened day one, not after weeks of being in the services.

I have turned the lights out in a room, turned on the haze while a video plays (rear projection so beams were not visible) and when the lights came on suddenly people saw the room now filled with haze and began to cough. Room had the haze in it before the lights came on, but when they saw the haze they reacted. I've had someone develop an asthma attack in the exact same situation. Once they saw the haze they reacted, not before. The brain caused a reaction, most likely out of fear. There have been studies done on this. I found my research through google. Searching various different key words and building my knowledge from various web pages.

Oh and I would highly recommend switching to a water based hazer. Might be better on the singers and won't leave a residue on the surfaces in the room.

[RonK]

You can also get "oil-less" fluid designed for the DF-50 (instead of the standard mineral oil-based.)

[dhawley]

can you advise name and distributor or the oil -less. I could not find it on the F-50 manufacturing site Thanks

[RonK]

if you google "df-50 oil-less" you should come up with a few choices