USP-Grade Bacteriostatic (BAC) Water for Peptides — 10mL & 30mL

Buy USP-Grade BAC Water for Peptide Research Bacteriostatic water, commonly called BAC water, is a USP-grade preserved aqueous solution used in laboratory peptide workflows where a research method requires repeated access to a prepared vial. It is formulated with 0.9% benzyl alcohol as a preservative, which is what lets a sealed vial be entered more than once under proper laboratory handling. This product is supplied in sealed 10mL and 30mL vials. Choose a single 10mL vial, a 3-vial or 10-vial pack of 10mL vials, or a single 30mL vial. Every multi-vial pack is separate sealed 10mL vials — not one larger bottle. Current pricing for each option is shown above the Add to Cart button. Ordering peptides? One 10mL BAC water vial is included free with every peptide vial order. Use this page to buy additional vials. Bacteriostatic Water Product Specifications Product Bacteriostatic water, also called BAC water Grade USP Vial volumes 10mL or 30mL Available options 1, 3 or 10 separate 10mL vials, or one 30mL vial Preservative 0.9% benzyl alcohol Form Sterile, non-pyrogenic aqueous solution Container Sealed multi-use vial Storage Store sealed at controlled room temperature, away from direct light and heat. After first entry, follow the product label and your laboratory procedure Intended use Controlled laboratory and analytical research Human or veterinary use Not intended for either BAC Water vs Sterile Water, Saline and Acetic Acid Water Researchers often ask which diluent a peptide protocol calls for. These solutions do different jobs and are not universal substitutes for one another: Diluent Main distinction Preservative Multi-use vial Bacteriostatic (BAC) water Preserved aqueous solution — the standard choice for reconstituting multi-use lyophilized peptides 0.9% benzyl alcohol Yes, per label and lab procedure Sterile water Unpreserved sterile aqueous solution None No — single entry 0.9% sodium chloride (saline) Isotonic diluent where benzyl alcohol must be avoided None No — single entry 0.6% acetic acid water Acidified solvent for protocols that specify low-pH conditions None No Follow the documentation for the exact compound and laboratory method being used. For the full comparison, read the Bacteriostatic Water for Peptides Guide. Need Help Calculating Concentration? The volume of BAC water added sets the concentration of the reconstituted solution (total mg ÷ mL added = mg/mL). Use the Dr Jays Peptides Reconstitution Calculator or read the complete Bacteriostatic Water for Peptides Guide for worked examples. Calculator results are concentration references for controlled research, not dosing instructions. BAC water is the diluent shipped with BPC-157, retatrutide, tirzepatide, cagrilintide, KLOW blend, GHK-Cu and every other lyophilized peptide from Dr Jays Peptides. Why Order BAC Water from Dr Jays Peptides? USP-grade bacteriostatic water in sealed 10mL and 30mL vials, with clearly labelled pack quantities Single-vial and discounted 3- and 10-vial options U.S.-based order fulfilment, Monday to Friday Ground, 2-Day and Next Day shipping One vial free with every qualifying peptide order Loyalty points on eligible purchases Storage and Handling Store sealed vials at controlled room temperature, away from direct sunlight and excessive heat. Storage and after-opening handling depend on the product label, manufacturer instructions and laboratory procedure — follow the documentation supplied with the applicable lot, and use sterile technique whenever a vial is entered. BAC Water for Peptides — Frequently Asked Questions Where can I buy bacteriostatic water for peptides? Dr Jays Peptides sells USP-grade bacteriostatic BAC water for laboratory peptide research in sealed 10mL and 30mL vials. Choose a single vial or a 3- or 10-vial pack directly on this page. It ships from the US and is free with every peptide vial order. Where can I buy BAC water online? BAC water can be ordered from this page in sealed 10mL vials. Current pricing, pack quantities, availability and shipping options are shown above the Add to Cart button. Can I buy bacteriostatic water at CVS or Walgreens? Retail pharmacies do not generally stock bacteriostatic water for laboratory use, and inventory and labelling vary by location. Dr Jays Peptides offers 10mL bacteriostatic water online for laboratory research, so you can order without relying on local pharmacy inventory. Can bacteriostatic water be purchased over the counter? Retail availability and intended-use labelling vary. Dr Jays Peptides sells this product online strictly for controlled laboratory and analytical research. It is not marketed for human or veterinary use. What kind of BAC water is used for peptide research? Look for a clearly labelled, USP-grade solution with documented ingredients, vial volume and storage conditions. This product is USP-grade, sterile, non-pyrogenic and contains 0.9% benzyl alcohol as a preservative, in sealed 10mL and 30mL vials. Is BAC water the same as sterile water? No. BAC water contains a bacteriostatic preservative, which is why it is suitable for vials that are entered more than once. Sterile water contains no preservative and is intended for single entry. They should not automatically be substituted for one another. Is BAC water the same as acetic acid water? No. Acetic acid water is an acidified solvent used only where a protocol specifies low-pH conditions, and it has no preservative. BAC water is the standard diluent for most lyophilized peptides. See the acetic acid water 0.6% listing if your method calls for it. How much bacteriostatic water do I use per peptide vial? The volume you add sets the concentration. Divide the vial’s milligram amount by your protocol’s target concentration (mg/mL) to get the volume of BAC water to add, or use the reconstitution calculator. This is concentration math for laboratory research, not dosing guidance. Do you sell 30mL bacteriostatic water? Yes — a single sealed 30mL vial is available in the size selector above, alongside the 10mL options. Note that the 3-vial pack is three separate 10mL vials (30mL in total), not one 30mL bottle; choose “1 x 30mL Vial” if you want a single larger vial. Is this USP-grade bacteriostatic water? Yes. This is USP-grade bacteriostatic water — sterile, non-pyrogenic and preserved with 0.9% benzyl alcohol — supplied in sealed 10mL and 30mL vials for laboratory research use. Is BAC water included with peptide orders? Yes — one 10mL vial ships free with every peptide vial order. Additional single vials and multi-vial packs can be purchased separately on this page. See how the free BAC water offer works.