A little test I did.....

Thread: A little test I did.....

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  1. #1
    Member mechonster's Avatar
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    A little test I did.....

    Hi guys,just wanted to share the results of the test I did today.
    Since we had the first snow for this winter last night I decided
    to test my g's (and myCitizen Nighthawk) and see if they would fog
    under the crystal.
    So I took each of them out and put a pinch of snow on the
    crystal.The watches in question are G6900B,GLX5600,Mudman 9000
    and my only one(so far)froggy-gw200ms1 All 200m rated.....and guess which ones fogged
    and which didn't.Well the results were a little surprising to me,because
    they all fogged..including the frogman.And since even the frog (which
    we all know is ISO certified) fogged I assume that under the same conditions
    pretty much any watch will fog.This is the condensation test that any ISO6425 certified watch
    must pass : Condensation test. The watch shall be placed on a heated plate at a temperature between 40°C and 45°C until the watch has reached the temperature of the heated plate (in practice, a heating time of 10 minutes to 20 minutes, depending on the type of watch, will be sufficient). A drop of water, at a temperature of 18°C to 25°C shall be placed on the glass of the watch. After about 1 minute, the glass shall be wiped with a dry rag. Any watch which has condensation on the interior surface of the glass shall be eliminated.
    I assume that the frog will pass that test ,but my test was a bit more stringent because my "drop" was more like 1-3
    °C instead of 18-25.
    The fog stain was no more then 2-4mm in diameter on all watches including the frog,maybe a little bigger on the Mudman
    and disappeared within 20-30sec. The same with the Nighthawk.I'm not worried at all about their WR because I've
    showered and swum with all of them and never had a problem.
    But I was wondering if any of you guys have done similar test with other ISO certified watches so we can see if the frog is
    any different.

  2. #2
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    A little test I did.....

    Interesting results and experiment.

    If I understood your posting correctly, the test you did is quite different from the ISO test that you described.

    For example, a drop of water at 25 deg is quite different from a pinch of snow at negative deg Celsius.

    Also if you move the watches from a heated room to outside, then the environment will have changed even more drastically.

    Finally the 1 min wait under the ISO test, vs the 30 secs of fogging you observed, seems to suggest it would have passed?

    (TBH, I've dont have access to the ISO requirements, so I relied on what you wrote).






    ---

  3. #3
    LUW
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    Re: A little test I did.....

    Quote Originally Posted by GS_Leng View Post
    If I understood your posting correctly, the test you did is quite different from the ISO test that you described.
    Exactly.
    Cheers!
    Luciano

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  5. #4
    Member mechonster's Avatar
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    Re: A little test I did.....

    That's exactly what I'm saying.I know the fog will (and did) pass the ISO test,
    and I know that my test is quite different and more stringent,
    but what I'd like to know is, if other people with ISO divers have done
    the same test as I did ,and if their whatches fogged as well.

  6. #5
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    Re: A little test I did.....

    I was surprised the other day when this happened to my awg101. This occurred from being inside a nice cosy room to going outside about 2 deg C. Nothing drastic I'd say. The fog didn't last long but I took a picture like a true WIS
    Attached Images Attached Images


  7. #6
    LUW
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    Re: A little test I did.....

    Quote Originally Posted by oiljam View Post
    I was surprised the other day when this happened to my awg101. This occurred from being inside a nice cosy room to going outside about 2 deg C.
    That is still more severe then what the ISO 6425 test asks for, and besides, the AWG is not ISO-certified. Basically all my Thailand watches will fog in a much less drastic temperature change, but that doesn't happen with any of my Frogs if exposed to the same conditions.
    Cheers!
    Luciano

  8. #7
    Member mechonster's Avatar
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    Re: A little test I did.....

    Luciano since you live in Brazil I suppose you don't see snow too often:),
    but could you do this test with your frogs using some ice from the freezer
    and tell us what the results are.And if none of your frogs fogged ,then I'll be
    totally puzzled.

  9. #8
    LUW
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    Re: A little test I did.....

    Oh don't worry, we get cold enough here, trust me .
    I wouldn't say I've done the test (ISO specs) to all my Gs, but I've done it with at least 75% of them, and so far I only had problems with (most of) the Thailand models.
    It's a PITA because on winter bike rides, specially in the early morning, the display fogs up and it's hard to read, like here:


    That NEVER happened to any frog of mine.
    Last edited by LUW; December 13th, 2012 at 01:03.
    Cheers!
    Luciano

  10. #9
    Member mechonster's Avatar
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    Re: A little test I did.....

    Yes,but the question is what happens if you put snow or ice on the display :)
    Chilly mornings are not nearly as cold:)

  11. #10
    LUW
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    Re: A little test I did.....

    Quote Originally Posted by mechonster View Post
    Yes,but the question is what happens if you put snow or ice on the display :)
    Answer: Unless the watch was assembled in a 0% humidity environment, it will fog.
    It's just physics.
    Cheers!
    Luciano

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