Mine came Saturday. I was glad to see some stuff on the effects of adding phosphoric acid. I've been using it instead of lactic and noticed some interesting results, namely it causes things to drop out of my hard tap water especially when I also add my flavor salts (CaCl2 and CaSO4). I'm adding the salts to the mash now and only treating the water with phosphoric as I heat it. I added some phosphoric to some water and boiled it, and I got alot of precipitate. I'm goign to use this to make up my starsan now, when I use tap water it gets hazy right away.