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Thread: cya test

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    cya test

    I have a question about testing your cya, do you fill the vial until the dot can't be seen at all, or until it just starts to fade out? Seems the more I look at it, sometimes I think I can see it and sometimes not...
    16500 gallon plaster, BBB

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    Mod Squad Bama Rambler's Avatar
    Join Date
    Jun 2009
    SouthWest Alabama

    Re: cya test

    Until it's like it was never there.
    Dave J. TFP Moderator
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    Mod Squad Patrick_B's Avatar
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    Jun 2011

    Re: cya test

    Quote Originally Posted by Bama Rambler
    Until it's like it was never there.

    Very good description
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    Join Date
    Mar 2007
    San Rafael, CA USA

    Re: cya test

    See this link. Don't go crazy looking for it. If you are saying to yourself "I think there might be a dot, but I'm not sure", then it's probably not there. You can always add more to the tube to see if it changes, then pour some back in the bottle and do it again until you get a reasonable sense for it. It's more a matter of practice. What is important is to stand outside with your back to the sun holding the tube in front of you looking straight down into it. Hold the tube from the top so that you aren't blocking the strong indirect light into the sides of the tube.
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