Water stains in/on float glass

[Bagel Framer]

Hi,

I have some sheets of float glass that have got water on them, due to poor storage.

Is it possible to get the resultant stain off the glass and if so, how do I go about it please?

It's only one sheet 3' x 2' and three sheets smaller still, but it would be nice to salvage them.

Thanks!

[Roboframer]

This stuff http://www.lionpic.co.uk/product/Libero ... 804,0.aspx