Ion Peptide has the lowest listed price among these six 10 mL BAC-water vials at $10.00. Herbilabs lists a 10-vial pack for $44.97, or about $4.50 per 10 mL vial. EZ Peps also offers a separate 30 mL Pfizer/Hospira option.
In this guide, we break down six top BAC water listings for peptide research, including their prices, vial sizes and available documentation. The PeptidePrices editorial team evaluated each of the six options below using the exact same criteria.
What is the best BAC water for peptide research?
Start with the formulation your laboratory method specifies, then check the lot documentation, vial size and delivered price. For methods that call for preserved water, a clearly labelled 0.9% benzyl alcohol solution gives you a defined starting specification. Methods requiring preservative-free water need a different diluent.
The strongest purchase record connects the supplier, product label, lot number and relevant test results. A vendor's peptide testing score can help you decide where to investigate, while the BAC-water documentation answers questions about the actual diluent.
Best BAC water for peptides in 2026: six options compared
We checked six 10 mL options on November 6, 2026. Prices are the listed U.S. dollar price for one vial before shipping, tax and coupon codes. The table compares the published product details and available documentation.
| Vendor and product | Volume | Listed price | Price per mL | Evidence or ordering detail |
|---|---|---|---|---|
| Herbilabs reconstitution solution | 10 mL | $14.97 | $1.50 | 0.9% benzyl alcohol; lot-specific COA by request |
| Ion Peptide BW | 10 mL | $10.00 | $1.00 | 10 mL variant with volume-specific report links |
| PS Peptides BAC water | 10 mL | $14.99 | $1.50 | Published lot-report links; free shipping advertised on any order |
| Amino Club Amino H2O | 10 mL | $19.99 | $2.00 | 0.9% benzyl alcohol specification and displayed lot results |
| EZ Peps EZBAC | 10 mL | $15.99 | $1.60 | 0.9% benzyl alcohol; product page shows batch details |
| Instant Peptides bacteriostatic water | 10 mL | $12.95 | $1.30 | 10 mL and 30 mL options with separate batch-report links |
The six listed prices range from $10.00 to $19.99 per 10 mL vial, a difference of $9.99 before shipping and discounts. PS Peptides advertises free shipping on any order. Compare the delivered total and the report for the actual lot alongside the vial price.
Herbilabs for research-use BAC water
herbilabs.com lists its 10 mL reconstitution solution for $14.97 on its U.S. storefront. The research-use solution is supplied in a glass vial and described as sterile and non-pyrogenic, with 0.9% benzyl alcohol. It is an option for U.S. researchers looking for a 10 mL vial and batch documentation.
Herbilabs also lists a 10 × 10 mL pack at $44.97 on its U.S. storefront, equivalent to about $4.50 per sealed vial. Its catalog includes 3 mL, 20 mL and 30 mL vials and a 10 × 3 mL pack. In the November 6 check, the single 10 mL vial and 10 × 10 mL pack were available, while the other formats were marked sold out. Check stock and regional currency on the storefront before ordering. Herbilabs shop.
For UK and EU researchers, herbilabs.co.uk displayed the 10 mL vial at €14.97 and the 10 × 10 mL pack at €44.97 during our check. The UK site's current banner advertises free shipping from €75. Delivery, currency and eligibility can depend on the destination, so check the regional checkout for the applicable threshold.
Herbilabs says each lot has its own COA and describes third-party testing for benzyl alcohol content, pH, sterility and endotoxins. Its COA request page asks for an email address and batch number. Request the report for the lot being supplied and review the actual results and methods. Businesses can also inquire about wholesale, private-label and white-label supply.
Ion Peptide BAC Water: Lowest 10 mL List Price
Ion's selected 10 mL BW variant was $10.00 and in stock when we checked on November 6. Its 3 mL variant was $7.00, while the 30 mL variant was $14.95 and marked out of stock. View Ion Peptide BW.
Ion separates water report links by volume. Its 10 mL selector includes a report labelled BW10-07152026, alongside a BW30-labelled document. Match the report to the size and supplied lot before using it to evaluate the purchase.
PeptidePrices rates Ion Peptide 10/10 overall. Our vendor review describes a retained archive of 505 report records across several laboratories, including issuer-verified peptide reports; that wider archive is separate from the water-specific files on the product page. Read our Ion Peptide review.
For the delivered total, check the applicable shipping and discount on the actual water order. Our Ion Peptide coupon page lists the vendor's offer and its verification details.
PS Peptides BAC Water: Lot Reports and Free Shipping
PS Peptides lists a 10 mL vial at $14.99 and offers multi-vial cases. The listing describes a 0.9% benzyl alcohol formulation. View PS Peptides BAC water.
The product page links lot reports for its water. Check the report's sample, lot and test methods against the vial supplied, and request clarification if the current batch is not identified.
PeptidePrices rates PS Peptides 9/10 overall. Our October review retained 195 report identities across the supplier's broader archive, including 190 matched to laboratory records; those figures describe the vendor archive rather than a verified count of water reports. Read our PS Peptides review.
PS Peptides advertises free shipping on any order, with an advertised UPS 2nd Day Air threshold above $200. Check the selected service and current terms at checkout. See our PS Peptides coupon page for the offer.
Amino Club Amino H2O: 40% Off and Lot Reports
Amino Club lists 10 mL Amino H2O at $19.99 before discounts and also offers a 30 mL format. The label on its product page specifies 0.9% benzyl alcohol and a pH range of 4.5–7.0. View Amino H2O.
The page displays ILS results and linked certificates, including a 10 mL record for lot H2O0001. More than one dated result is displayed under that lot name, so confirm which document corresponds to the container supplied. The older displayed record includes benzyl alcohol, pH and endotoxin information.
PeptidePrices rates Amino Club 10/10 overall. Our October review retained 109 reports across the broader supplier archive, of which 107 matched laboratory records; two differed from the laboratory versions. Read our Amino Club review.
Code PEPTIDEPRICES takes 40% off Amino H2O, reducing the $19.99 10 mL vial to $11.99 before shipping and tax. PeptidePrices confirmed the code applies to water on November 6, 2026. The product page also advertised a separate 40% FALL40 promotion that day. See the Amino Club coupon page for offer details.
EZ Peps: EZBAC and Pfizer/Hospira Options
EZ Peps lists its 10 mL EZBAC research-use reconstitution solution at $15.99. Its product page specifies 0.9% benzyl alcohol. View EZBAC.
The listing shows batch 26-L9-BUSV and a certificate link, with displayed pH 6.9 and 0.90% alcohol. It also says that the batch tested more than 10% away from its expected net content and was relabeled to reflect the measured content. Check the product name, lot and report against the vial supplied.
PeptidePrices rates EZ Peps 10/10 overall. Our vendor review describes the supplier's wider certificate archive and selected batches with identity, purity, content and additional safety panels; the scope and methods vary by report. Read our EZ Peps review.
EZ Peps also lists a separate 30 mL Pfizer/Hospira bacteriostatic-water product. Compare the manufacturer, size, availability and full checkout price with EZBAC, and see the EZ Peps coupon page for offer terms.
Instant Peptides BAC Water: Separate Reports by Vial Size
Instant Peptides lists its 10 mL bacteriostatic water at $12.95 and also offers a 30 mL option. View Instant Peptides BAC water.
Its product page links separate 10 mL and 30 mL batch records. The 10 mL record is labelled 2026-BAC10-A and dated July 13, 2026; verify the lot on the container against the report before ordering.
PeptidePrices rates Instant Peptides 10/10 overall. Our October review retained 208 report identities across its broader archive, with 199 exact matches to issuing-laboratory records. These archive counts should not be interpreted as water-specific testing counts. Read our Instant Peptides review.
Check the current stock and delivery total for the selected size. Our Instant Peptides coupon page explains the vendor's available discount and verification details.
Medical-grade, USP and research-grade BAC water
A useful specification names the product, composition and applicable standard. Pfizer's label for Bacteriostatic Water for Injection, USP identifies its manufacturer, preservative and container presentation. The 30 mL presentation contains 9 mg/mL benzyl alcohol, equivalent to 0.9%. Compare a listing's label and documentation with the standard your procurement process requires. Pfizer product label.
A shop's use of “medical-grade” supplies less information than a traceable manufacturer label and a lot-specific record. For research-labelled products, examine the reported tests and their results directly.
Bacteriostatic water vs sterile water for peptides
Bacteriostatic water includes an antimicrobial preservative. Pfizer's Sterile Water for Injection contains no bacteriostat, antimicrobial agent or added buffer and comes in single-dose containers. Preservative compatibility is therefore part of selecting a diluent for an experiment. Pfizer sterile-water description.
For preserved multi-dose products, an antimicrobial ingredient helps limit bacterial growth. It does not make poor handling harmless or provide complete protection from contamination. CDC explains these limits in its multi-dose-vial guidance. CDC vial guidance.
How to check BAC water quality and COAs
Check the sample name, volume, lot, laboratory and report date first. Then look for tests relevant to the solution, such as benzyl alcohol concentration, pH, endotoxin and the stated microbial method. Read units and limits alongside the numerical results.
A peptide purity percentage cannot substitute for measuring a diluent's preservative concentration. Likewise, PCR screening and culture-based sterility testing answer different questions. Our COA reading guide explains how to separate identity, content, purity and additional assays.
The product-page evidence described here is a purchasing comparison. Our vendor profiles and COA library show the separate, report-specific evidence PeptidePrices has retained and assessed.
What size BAC water vial should you choose?
Match the volume to the laboratory's planned work and the container's permitted in-use period. Several separately sealed containers can suit work spread across different dates. One larger container can reduce the unit cost when its contents will be used within the relevant handling limits.
Compare total usable volume with the full delivered cost. The six options above use 10 mL vials, making their listed per-vial and per-mL prices easier to compare. Multipacks and larger containers may suit different purchasing needs.
How to choose BAC water for different research compounds
Protocols for different materials, such as BPC-157 and GHK-Cu, can specify different solvents, pH ranges, preservatives or concentrations. Check the compound supplier’s specifications and your laboratory method for the exact material before selecting a diluent.
Once the method specifies the solvent and target concentration, divide the material’s mass by the final solution volume to calculate concentration. For example, 10 mg in a final volume of 5 mL gives 2 mg/mL. This is a unit calculation for laboratory planning.
A calculator can check arithmetic, but it cannot establish solubility, compatibility, stability or a biological protocol. Keep the selected diluent, actual final volume and preparation date in the experiment record.
How to store BAC water and check its shelf life
Read the exact container label for unopened storage and expiration. Pfizer's named bacteriostatic-water product specifies 20–25°C. CDC's clinical multi-dose guidance uses 28 days after first puncture unless the manufacturer specifies another period, capped by the original expiry. Pfizer storage information · CDC multi-dose guidance.
The diluent's opened-container period and the stability of a prepared peptide solution are separate records. Preserve the instructions for the actual solution and method. Pfizer's label directs users to the manufacturer's compatibility and storage instructions for the dissolved drug. Pfizer precautions.
BAC water shipping, discounts and total cost
Add shipping, tax and any mandatory fee to the merchandise total before comparing suppliers. Only include a coupon when its terms cover the water. Amino Club’s PEPTIDEPRICES code applies to Amino H2O and takes 40% off, reducing its $19.99 10 mL vial to $11.99 before shipping and tax. PeptidePrices confirmed the water offer on November 6, 2026. A code that works for a peptide may have different terms for laboratory supplies.
For a small standalone order, a shipping charge can reverse the apparent ranking. For a combined laboratory-supply order, the existing basket may already meet a free-shipping threshold. Compare the final total for the same required volume and delivery service.
Which other lab supplies do researchers need?
The protocol determines the supplies needed alongside the diluent. Common supplies include compatible sterile vials, syringes, needles, alcohol wipes, gloves and labels. Choose measuring equipment and storage to match the laboratory method.
How to compare vendor reviews and documentation
Customer reviews can illuminate dispatch, packaging, communication and support. Read the actual comments and their dates, not just the aggregate score, and look for patterns across orders.
Our vendor ratings bring together COA practices, reputation, transparency and operations. The broader rating is useful context for evaluating a supplier; for the water itself, check the sample, lot, issuing laboratory and tests on the applicable report. The vendor directory links to the evidence and rating methodology for each listed supplier.
Sources
- Herbilabs U.S. shop and COA request page — product formats, U.S. storefront prices and documentation, checked November 6, 2026.
- Ion Peptide BW, PS Peptides BAC water, Amino H2O, EZBAC and Instant Peptides BAC water — listing and report information checked November 6, 2026.
- Pfizer bacteriostatic-water product information and CDC multi-dose vial guidance — formulation, storage and handling context.
Further reading
- How to read a peptide COA
- How to verify a peptide COA
- PeptidePrices vendor directory
- PeptidePrices COA library
- Pfizer bacteriostatic-water product information
- CDC guidance on multi-dose vials
Frequently asked questions
What is the best BAC water for peptides?
Ion Peptide has the lowest listed single-vial price among the six 10 mL options at $10.00. Herbilabs lists ten 10 mL vials for $44.97. Choose the formulation and documentation your research method requires.
Is all bacteriostatic water 0.9% benzyl alcohol?
No. The commonly encountered 30 mL Hospira presentation contains 0.9%, while Pfizer's label also describes a different presentation with 1.1%. Read the concentration on the actual product label. Pfizer formulation and presentations.
Which of these suppliers has the cheapest BAC water?
Ion Peptide had the cheapest listed 10 mL single vial at $10.00 in our November 6 check. Herbilabs listed a 10-vial pack at $44.97, about $4.50 per vial. Compare shipping and any applicable discounts at checkout.
Can I use a peptide coupon on BAC water?
Yes. Amino Club’s PEPTIDEPRICES code applies to Amino H2O and takes 40% off; a $19.99 10 mL vial is $11.99 before shipping and tax. Other suppliers’ coupon terms may differ.
Does an unopened vial need refrigeration?
Use the temperature range on its label. Pfizer specifies 20–25°C for its named bacteriostatic-water product. A laboratory's instructions for a prepared peptide solution may require different storage.
Does BAC water make a peptide suitable for human use?
No. Adding a diluent does not change a research product's regulatory status or establish its suitability for administration. The suppliers' research-use qualifications continue to apply.