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Anti-Fogging Treatments for New Masks. (a comparison of techniques)

Discussion in 'General Scuba Equipment Discussions' started by lowviz, Feb 23, 2019.

  1. stuartv

    stuartv Seeking the Light ScubaBoard Supporter

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    Dishwasher first. If that doesn't do it, then ammonia.

    My opinion, anyway, after ruining 2 masks with overzealous application of ammonia. Also having now tried some (2 or 3?) new masks with ONLY the dishwasher treatment and no other prep.
     
    lowviz likes this.
  2. lowviz

    lowviz Solo Diver ScubaBoard Supporter

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    You nailed the end of this thread. Enough of analysis paralysis.

    I agree. Start with just the dishwasher. If not, the 'recommended' application of household ammonia: Level your mask in the open air and add enough ammonia to cover both lenses and allow for evaporation. 3 days for the first treatment. Dishwasher again.

    @tursiops, If still not to your satisfaction, add two more days of ammonia and dishwasher. If that doesn't work, I want your mask!

    PM me. Done with this experiment. We have, as a team, managed to identify and refine an additional (and novel) procedure to defog masks. Team success!

    Tonight or tomorrow: First attempt to treat @Johnoly's masks. Yep. Done. Showtime!

    Setting up now...
     
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  3. lowviz

    lowviz Solo Diver ScubaBoard Supporter

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    Mods: This thread has reached a conclusion but may well yet wander well beyond established norms for this forum. Please be open-minded...
    ........................................................................................................................................

    Johnoly donated a dozen 'cheap' masks to help drag this thread out of the muck. I started with the Speedo mask for kids. I know what a Speedo looks like on the average grown male. OMG.

    @Johnoly: Much editing to do tonight. First of three trials is a 'fail'. Sneak preview, more tonight...
    Chemical Volcano.jpg


    No, no! the mask is OK:

    Mask Test1.jpg
     
    Johnoly likes this.
  4. Johnoly

    Johnoly ScubaBoard Supporter ScubaBoard Supporter

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    Uncle Rob does the mask testing....Funny as heck..

     
  5. lowviz

    lowviz Solo Diver ScubaBoard Supporter

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    I started with a cinder cone volcano on the test lens. It is not overly obvious but the mask is floating in a very concentrated solution of ascorbic acid. (Vitamin C) I have to go to Vimeo to give you the 3-second clip that gives the sound. >sigh< This might take a bit before I post a link...

    Loaded mask.jpg

    The ascorbic acid lake reduces all of the unreacted chromium 6 to chromium 3. Chrome 3 is still nasty, but far, far less so than chrome 6.

    Hazards: OSHA Issues Final Standard on Hexavalent Chromium | Occupational Safety and Health Administration

    You don't want any chrome 6 in your water supply: Erin Brockovich - Wikipedia

    So remove all chromium from the environment?: Office of Dietary Supplements - Dietary Supplement Fact Sheet: Chromium

    So first reduce all the chrome six to chrome three then precipitate as Cr(OH)3. Water-insoluble. Filter, bag, drop off next Wed at my recycling/hazmat collection site. No prob killed the chrome. Tagged and bagged handed off properly.

    Years and years ago (1960's) this would have been a plaster volcano charged with several pounds of ammonium dichromate. Seriously, that was most impressive both in sound and visual effects.
     
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  6. lowviz

    lowviz Solo Diver ScubaBoard Supporter

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    Try this: password: volcano
     
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  7. lowviz

    lowviz Solo Diver ScubaBoard Supporter

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  8. stuartv

    stuartv Seeking the Light ScubaBoard Supporter

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    But did you die?

    :wink:
     
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  9. lowviz

    lowviz Solo Diver ScubaBoard Supporter

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    No. But felt like I wanted to die. Cleanup is a bitch! -last time anybody is going to get this chemical reaction from me.

    Next:

    Rocket candy! Time-proven. Yeah, you can kill yourself with that too, but it takes much more effort.

    :)
     
    Johnoly likes this.
  10. lowviz

    lowviz Solo Diver ScubaBoard Supporter

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    @Johnoly, If you so desire, get yourself a copy of the classic rocketry manual for amateurs. I have two. One I used for forever and a second that I bought because I temporarily misplaced my first one. Neither is for sale.

    https://www.amazon.com/Rocket-Manual-Amateurs-Bertrand-Brinley/dp/B001K2SI9M

    Don't pay the stupid asking prices! As long as it is readable, any ragged dog-eared second-hand copy is every bit as good as a pristine original.
     
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