How would a private individual go about testing a PH for purity? In other words, what labs are available for this sort of thing? And what kind of costs are involved?
Some of the deals in the "swap meet" seem too good to be true, and a couple of us are interested in testing a certain members products to see if their cut with anything.
Some of the deals in the "swap meet" seem too good to be true, and a couple of us are interested in testing a certain members products to see if their cut with anything.