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Date: | Fri, 30 Sep 2016 00:20:06 -0300 |
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On Thu, Sep 29, 2016 at 10:58 PM, DARN wrote:
> I would like to make a comment on the fact that formic acid vapour is
> heavier than air. It is, but as soon as it is released from the liquid
> acid, it quickly diffuses into the surrounding air. Once this diffusion
> takes place, it is just another component of the mixture of gases in the
> hive and, like any other molecule in a gas, has no tendency to settle out.
> It quickly becomes evenly distributed in the container.
>
My understanding is that formic acid vapor obligues varroa to dislodge from
the bees and when at the bottom board they end up dead by a higher
concentration of formic acid there.
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