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What does 25mg/m3 of mineral oil haze look like?

Discussion in 'Special Effects' started by Lyle Williams, Apr 13, 2019.

  1. Lyle Williams

    Lyle Williams Active Member

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    What does 25mg/m3 of mineral oil haze look like?

    I'm trying to get a feel for where the Equity limits are.
     
  2. Lyle Williams

    Lyle Williams Active Member

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    I make it out to be a pea-soup. 1 second of hazer output trapped in 1 cubic metre.

    Does that fit with everyone else's understanding?
     
  3. derekleffew

    derekleffew Resident Curmudgeon Senior Team Premium Member

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    [​IMG]
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    "loose stools"

    WARNNG: This post may not be appropriate for some more sensitive/less intelligent viewers.
     
    NateTheRiddler likes this.
  4. EdSavoie

    EdSavoie Well-Known Member

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    The last time I read the equity "study" I largely took issue in it's conclusions as it admits that other factors (the mere running of the show, humidity of the space, etc) were at play, yet it ALSO decides on an arbitrary value of 25mg/m3.

    If the study were were actually committed to finding the truth, the conclusion would be that more research is required in order to eliminate external factors, instead of jumping to set a guideline. From the AEA study:

    "The epidemiologic methodology does not allow us to conclude that a given individual’s symptoms were directly caused by exposure to these theatrical effects."

    Correlation coefficients were weak, shows with highest reported vocal issues were also shows rated as "most demanding" vocally.

    Take from that what you will, but every study I've seen has been wishy washy, or otherwise not found any adverse health effects from propylene glycol or mineral oil haze.

    So that brings us back to the question, does anyone know what 25mg/m3 looks like?
     
    RonHebbard likes this.
  5. RonHebbard

    RonHebbard Well-Known Member Premium Member

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    @EdSavoie You may find a career in politics in your future with your ability to speak reams while nary answering the query.
    Toodleoo!
    Ron Hebbard
     
  6. Lyle Williams

    Lyle Williams Active Member

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    Yay! Clearly we're all compliant!
     
    RonHebbard likes this.

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