Tubeless - it's the way forward

[andrew_s]

A small amount of ammonia (which is alkaline, and thus prevents the liquid from becoming acidic) is usually added to the liquid to stop it solidifying too easily, I expect this affects the bonding in the liquid dispersion and makes all the tiny solid latex particles repel each other, which stops them sticking together into clumps prematurely.

That's why using CO2 with a tubeless tyre isn't a good idea - the CO2 is acidic and neutralizes the alkalinity of the sealant liquid, so the latex clumps faster.