A research article on a popular pep vendor site (they are not on the price tool but their name has come up in comments), claims that they tested many BAC water brands and only some passed. Among those which passed is the well known one and then there's Lab1 (never heard). It's on Amzn and shows a really extended expiry date 2029. Has anyone used it? Which BAC water peptide research experts use? (When it comes to liquids I'm a bit extra cautious)!