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Compass Marine | all galleries >> Compass Marine "How To" Articles >> Understanding the Moisture Meter / Electrophysics CT-33 > Residual Deck Surface Moisture
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Residual Deck Surface Moisture
29-OCT-2008

Residual Deck Surface Moisture

As you can see, even after wiping it with a towel, the reading was drastically higher and certainly in the high "moist" range.


Please DO NOT use a meter on any deck or interior hull sections that have dew, condensation or where it has recently rained. If you must take a reading after a rain or dew use a rag dampened with either Acetone or Denatured Alcohol to ensure the surface is bone dry before taking a reading. I still suggest waiting if at all possible. I only suggest Acetone with the utmost caution. PLEASE DO NOT use Acetone on a boat you don't yet own if you have even the slightest concern it is a painted finish. Never use Acetone on a painted surface!


Acetone drys surface moisture faster than Denatured Alcohol but both work. I suggest the latter and a little more patience as it is much safer.


Again you can not take a reading with even the slightest amount of surface moisture!.

Nikon D200
1/60s f/4.0 at 48.0mm iso100 full exif

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Ross Hill 20-Oct-2010 15:54
Even denatured alcohol will remove latex or acrylic paint.