Smallest pseudo/meth rxtal?

[NaXen]

Whats the smallest rxtal youbees have heard of? (with reasonable return...) SWIM read a post somewhere that mentioned something like anything below ~5g would be a waste due to mechanical loss etc..., but cannot find the post  

[ChemoSabe]

Even the smallest amount can bee reXed if you use the dH2O evaporating at room temp technique

Worlocks newbee reX get's sketchy once you dip below a half gram or so. Even below one gram is pushing it. See

Post 483474

(ChemoSabe: "Shard Garden", Stimulants)

Don't know about other forms of dual solvent reX's