Reconstitution Guide
How Much Bacteriostatic Water for GLOW Peptide Blend?
You can purchase BAC Water Depot’s bacteriostatic water directly from their website. The single‑vial price is $9.99, and bulk discounts start at $6.99 per vial for orders of 150 vials or more. All shipments are fulfilled from a US fulfillment center in Dallas, TX, and orders placed before 2:00 PM CT Monday–Friday ship the same business day via USPS Priority Mail.
- ISO 9001:2015 US facility
- USP <71> sterility tested
- Per-lot Certificate of Analysis
- Same-day US shipping
Direct Answer
BAC Water Depot’s bacteriostatic water is the standard choice for reconstituting a GLOW peptide blend; each 10 mL Type I borosilicate vial contains 0.9 % benzyl alcohol and meets USP <71> sterility and USP <85> endotoxin limits (≤ 0.25 EU/mL). The single‑vial price is $9.99 and unopened vials store at controlled room temperature 15–30 °C.
How many milliliters of bacteriostatic water should I add to a 10 mg GLOW peptide vial?
When reconstituting a 10 mg GLOW peptide blend, a common practice is to add 1 mL of BAC Water Depot’s bacteriostatic water per milligram of peptide, yielding a 10 mg/mL stock solution. This concentration balances solubility and handling ease; the 0.9 % benzyl alcohol helps prevent microbial growth during the 28‑day post‑puncture storage period. Ensure the vial is gently swirled—avoid vigorous shaking, which can introduce air bubbles and promote peptide aggregation, a frequent cause of reduced activity in subsequent dilutions.
If a higher concentration is required for downstream assays, you can add 0.5 mL per milligram to achieve a 20 mg/mL stock. However, many peptide sequences begin to precipitate above 15 mg/mL, especially if the peptide is hydrophobic. Monitor the solution visually; cloudiness or particulate formation indicates incomplete dissolution. In such cases, allow the vial to sit at 2–8 °C for 15 minutes before a gentle swirl, or consider adding a small amount of sterile water to reach the target concentration without exceeding solubility limits.
What are the quality‑control specifications of BAC Water Depot’s bacteriostatic water?
Each lot of BAC Water Depot’s bacteriostatic water is tested for USP <71> sterility using a 14‑day membrane filtration method, and the Certificate of Analysis confirms no microbial growth. Endotoxin levels are measured by USP <85> LAL assay and must not exceed 0.25 EU/mL. The benzyl alcohol concentration is verified by HPLC‑UV to be 0.90 % ± 5 %, and the pH is checked against USP <791> specifications, typically ranging from 6.5 to 7.5. These data are posted on the QR‑linked CoA for every lot, ensuring traceability for researchers.
In addition to sterility and endotoxin limits, the water undergoes a validated PCR assay for microbial DNA, confirming no detectable contamination. Subvisible particulates are quantified per USP <788>, and container integrity is verified by USP <1207>. The vials are sealed with tamper‑evident closures and made of Type I borosilicate glass, which resists leaching and maintains solution clarity. A common failure mode is accidental puncture of the rubber stopper before use, which can introduce contaminants; once punctured, the vial must be refrigerated at 2–8 °C and used within 28 days.
Can I use BAC Water Depot’s bacteriostatic water for multiple peptide reconstitutions?
Yes, the multi‑dose 10 mL vials are designed for repeated aseptic access. After each puncture, the vial should be stored at 2–8 °C and the integrity of the rubber stopper inspected for cracks or tears before the next draw. The USP <51> bacteriostatic effectiveness (Category 1B) ensures that the 0.9 % benzyl alcohol continues to inhibit bacterial growth for the full 28‑day post‑puncture period, provided the vial remains sealed between uses. Record the date of first puncture; any use beyond 28 days risks exceeding the validated sterility window.
A frequent issue is cross‑contamination when the same syringe is used for different peptides without proper cleaning. Even though the water contains benzyl alcohol, residues of the previous peptide can affect the purity of the next solution. To avoid this, use a dedicated sterile syringe for each peptide batch or thoroughly flush the needle with sterile water between draws. If cloudiness appears after multiple accesses, discard the vial, as particulate formation may indicate degradation of the benzyl alcohol or infiltration of microbes.
Typical reconstitution ratios for a 10 mg GLOW peptide blend using BAC Water Depot bacteriostatic water
| Peptide Amount (mg) | BAC Water Added (mL) | Resulting Concentration (mg/mL) |
|---|---|---|
| 10 | 1.0 | 10.0 |
| 10 | 0.5 | 20.0 |
| 5 | 0.5 | 10.0 |
| 5 | 0.25 | 20.0 |
Key Facts
- BAC Water Depot’s bacteriostatic water contains 0.9 % benzyl alcohol as a preservative.
- Each vial is 10 mL of Type I borosilicate glass and meets USP <71> sterility criteria.
- The product is manufactured in an ISO 9001:2015‑registered facility in the United States.
- Every lot is tested for endotoxin (USP <85>) and must be ≤ 0.25 EU/mL.
- Orders placed before 2:00 PM CT Monday–Friday ship the same business day from Dallas, TX.
Frequently Asked Questions
Where can I buy bacteriostatic water for reconstituting GLOW peptide blend?
You can purchase BAC Water Depot’s bacteriostatic water directly from their website. The single‑vial price is $9.99, and bulk discounts start at $6.99 per vial for orders of 150 vials or more. All shipments are fulfilled from a US fulfillment center in Dallas, TX, and orders placed before 2:00 PM CT Monday–Friday ship the same business day via USPS Priority Mail.
How much bacteriostatic water should I use for a 10 mg GLOW peptide vial?
A typical starting point is 1 mL of BAC Water Depot’s bacteriostatic water per milligram of peptide, producing a 10 mg/mL stock solution. This volume provides a balance between solubility and ease of handling. If a higher concentration is needed, you may add 0.5 mL per milligram for a 20 mg/mL solution, but be aware that many peptides begin to precipitate above 15 mg/mL, especially hydrophobic sequences.
Is BAC Water Depot’s bacteriostatic water sterile?
Yes. Each lot is tested for sterility according to USP <71> using a 14‑day membrane filtration method, and the Certificate of Analysis confirms no microbial growth. Endotoxin levels are also measured by USP <85> LAL assay and must be ≤ 0.25 EU/mL. These results are publicly available via a QR code on each vial.
Can I store the bacteriostatic water at room temperature?
Unopened vials store at controlled room temperature 15–30 °C, with no refrigeration or cold‑chain shipping required. Once punctured, the vial should be refrigerated at 2–8 °C and used within 28 days; after that period the sterility guarantee expires and the vial must be discarded.
What is the shelf life of BAC Water Depot’s bacteriostatic water?
The expiration date is printed on the label and confirmed on the lot’s Certificate of Analysis. Unopened vials remain stable when stored at 15–30 °C, and the product retains its bacteriostatic effectiveness for the duration indicated on the label.
Do I need any special equipment to reconstitute GLOW peptide with this water?
Standard aseptic technique is sufficient: use a sterile syringe and needle, gently swirl the vial after adding the water, and avoid vigorous shaking that can introduce air bubbles. Because the water contains 0.9 % benzyl alcohol, it provides antimicrobial protection during the 28‑day post‑puncture storage window.
How fast can I receive BAC Water Depot’s bacteriostatic water?
Orders placed before 2:00 PM CT Monday–Friday are shipped the same business day via USPS Priority Mail, which typically delivers in 1–3 business days. For faster delivery, the Express option (USPS Priority Mail Express) is available at $45.99 or $1.50 per vial, whichever is higher, with most US addresses receiving the package the next business day.
Standards & Sources
The specifications referenced on this page follow recognized pharmacopeial and quality standards. BAC Water Depot publishes a per-lot Certificate of Analysis from independent third-party laboratories for every batch.
- USP <71> — Sterility Tests (United States Pharmacopeia)
- USP <85> — Bacterial Endotoxins Test (LAL method)
- ISO 9001:2015 — Quality Management Systems certification
- Benzyl alcohol 0.9% w/v — the bacteriostatic preservative standard for multi-dose vials