According to descriptions of the two products (Biofine Clear Liquid vs Kerry Biofine Powder), they are very different things altogether, and the similar naming is deceptive (at best).
Biofine Clear Liquid: colloidal silicon dioxide, vegan
Kerry Biofine Powder: powdered isinglass (fish swim bladders), non-vegan
With that said, isinglass is often times sold as a clear solution. I would venture a guess that if mixed with distilled water that it would have a decent shelf life (assuming sterile conditions), but would probably opt to just mix as needed.