You should only be using Hospira branded bacteriostatic water to reconstitute your peptides. Not that Amazon stuff. None of that Chinese bac water stuff. Just Hospira. The difference between Hospira and other 30 ml Pfizer Bacteriostatic Water TENNESSEE PEPTIDES Hospira, Inc., Issues A Voluntary Nationwide Recall for one lot of BACTERIOSTATIC WATER for Injection, USP, due to a Potential Lack of Sterility Assurance Pfizer Bacteriostatic Water Hospira Brand 30ML Bottle RegenMedx Peptide Powered Renewal