On Sat, 2 Jun 2007 21:55:58 -0400, "Peter Dohm"
wrote:

..

Really, the only way that I know to correctly "do the science" is to
purchase a small amount (perhaps a liter) of anhydrous ethanol from a
medical supply and perform a series of tests on a variety of
samples--including samples of known pure and dry avgas and mogas. For the
moment, I am unwilling to undertake the project, and also I believe that
Clare and Bob are correct.

Peter

Definitive test for water in fuel.
Get some copper sulphate chystals. Put them in a warm oven untill they
are totally white. Store in a sealed dry container. Place a few
crystals in your check bottle and add fuel. If the crystal turns blue,
YOU HAVE WATER.Can't tell you how much, but if it stays white the gas
is DRY.

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