Mmmm, I’m looking at buying sodium silicate, preferably in powder form.
I found one source, a tin claiming to be 5 gallons. Now I don’t need 5 gallons – I just want to experiment with this things I learned in my youth to use water glass (a.k.a. sodium silicate solution) to seal pores in eggs and keep them for (up to 5) months outside the fridge – but, hey, I’ll manage.
i’m a bit leery of it being 5 gallons though: the picture shows that it says on the tin “Dilute with water to make 4 gallons.”