I use PureCleanPowder (mainly because I got a good deal on six canisters). Looks like it has pretty high potential, but a single serving (10g) is too small.
FWIW, that seems to the issue with all of the powders: the recommended serving size is just too small.
OTOH, if they recommended that you use 2-4 x as much, then the price per serving would be much higher, and they might lose sales that way.
ETA: This, BTW, is why we included data for both concentration and content (i.e., amount per serving) in the paper, i.e., so people could adjust doses accordingly if they wished.
Considering the often-large variability between samples from any given manufacturer, though, at the end of the day you never really
how much you are receiving (unless of course you measure it yourself).