My UGL might know how to brew (I hope he does lol) but not necessarily understand the importance of correct pH and other factors that are critical with bacteriostatic water. The likelihood that he's making the BAC himself is low, and it's far more likely he's sourcing it from who knows where, possibly thinking, as many do, that "it's just water with a little benzyl alcohol, how can anyone mess that up?" So it's more about sourcing, and it not being their area of expertise, than it is a question of outright trust. Plus, I've invested too much already in my GH and peptides to risk their efficacy because I was to save a little cheaping out on BAC