two different testing methods, Cuba lab used Gravimetric Testing...

two different testing methods, Cuba lab used Gravimetric Testing from memory and that is a method where a saturated solution seeks to be used as a reacting agent to form a gold precipitate.

The thing with that method is you have to pre-decide the amount of chemical to put into the saturated solutioin, if you don't saturated the soluton to the extreme then there's not enough chemical in the saturated solution to pull the gold out of solution into the precipitate.

Basically they were indication assays, once I researched the Gravimetric Testing method, those ones that were announced 40g/t* were basically screaming out that the readings as being "hit the limits of the testing method"

and it all took less than an hour to research up to, I think I even shared it back on the original post thread with pictures too