I urgently need to solve a water infiltration issue and need to find hydrogel powder that is used e.g. to make those rubbery decorative "pearls" that you often find in flower vases, or to mix with plant soil to absorb excess water.
(just to give an idea 1gr of hydrogel powder absorbs 50x its weight in liquids)
I've called Brico, Coop, some florists but apparently it is a mystery substance here in CH?
Found one supplier on amazon.it but they deliver only in 2 weeks' time
If you don't need so much, and you're desparate, Pampers contain superabsorbent gel. It's pretty much the same stuff except it'll have a tighter impurity spec.