BAC Water

Bacteriostatic water is the standard laboratory diluent for reconstituting lyophilized research peptides. Unlike sterile water for injection (SWFI), BAC water contains 0.9% benzyl alcohol, which inhibits bacterial proliferation and allows safe multi-dose withdrawal from a single vial under aseptic technique. If you’re running serial assays, long-duration cell cultures, or repeated aliquoting protocols, BAC water reduces waste and preserves peptide integrity across multiple uses. Our BAC water is manufactured in an ISO-certified facility, filtered to 0.22 µm, and packaged in 10 mL multi-dose vials. Each lot is tested for sterility, endotoxin, and pH (4.5–7.0) to meet USP preservative efficacy standards. This is not a peptide—it is the essential companion to every lyophilized compound in your freezer. One vial covers the reconstitution of multiple products when handled with proper aseptic technique. FAQ What is bacteriostatic water used for? BAC water is used to reconstitute lyophilized research peptides for laboratory use. The 0.9% benzyl alcohol content prevents bacterial growth between uses. Where can I buy bacteriostatic water for peptides? You can buy premium BAC water from Haelo Labs. Our 10 mL vials are sterile, third-party tested, and shipped with full documentation. How long does BAC water last after opening? When stored at 2–8°C and accessed with aseptic technique, BAC water remains suitable for research use for up to 28 days after the first puncture.