Bacteriostatic Water for GHRP-2 Reconstitution

What is the correct bacteriostatic water to GHRP-2 ratio for reconstitution?

The standard reconstitution ratio for GHRP-2 is 1 mL to 2 mL of bacteriostatic water per 5 mg vial of lyophilized peptide, depending on the desired concentration for dosing precision. A 2 mL reconstitution yields 2,500 mcg/mL (2.5 mg/mL), while 1 mL produces a more concentrated 5,000 mcg/mL solution. Researchers typically select volume based on the smallest graduation mark on their administration device to minimize measurement error.

When reconstituting GHRP-2, inject bacteriostatic water slowly down the inside wall of the vial rather than directly onto the lyophilized cake to prevent peptide aggregation and degradation. Allow the vial to sit undisturbed for 3-5 minutes before gently swirling—never shake—to complete dissolution. BAC Water Depot bacteriostatic water contains 0.9% benzyl alcohol as a bacteriostat, which maintains sterility for up to 28 days after first puncture when stored at 2-8°C and handled with aseptic technique.

How much bacteriostatic water do I need for multiple GHRP-2 vials?

For a 10-vial supply of 5 mg GHRP-2, you require 10 mL to 20 mL of bacteriostatic water depending on your chosen concentration, meaning one to two 10 mL vials of bacteriostatic water. BAC Water Depot offers 10-packs at $74.99 ($7.50 per vial) and bulk tiers starting at $6.49 per vial for 500+ units, with same-day US shipping on orders before 2:00 PM CT. Each vial is USP <71> sterility tested per lot with results verified by three independent third-party laboratories.

Researchers conducting extended studies often purchase bacteriostatic water in bulk to ensure lot consistency across all reconstitutions, reducing inter-batch variability. A single 10 mL vial reconstitutes 5-10 peptide vials depending on protocol, and unopened bacteriostatic water stored at room temperature (20-25°C) maintains stability for 24-36 months from manufacture date. Type I borosilicate glass vials prevent leachables that could interfere with sensitive peptide formulations or analytical assays.

Why is bacteriostatic water required instead of sterile water for GHRP-2?

Bacteriostatic water contains 0.9% benzyl alcohol, which inhibits bacterial growth in multi-dose vials for up to 28 days after first puncture, whereas sterile water lacks preservatives and must be discarded immediately after single use. GHRP-2 research protocols frequently require multiple doses from a single reconstituted vial over days or weeks, making bacteriostatic water the appropriate diluent per USP guidelines for multi-dose injectable preparations. Sterile water (bacteriostatic-free) is suitable only for immediate single-dose administration.

The benzyl alcohol concentration must be precisely controlled—too low permits microbial proliferation, while concentrations above 1.5% can denature peptide tertiary structure. BAC Water Depot discloses the exact 0.9% benzyl alcohol concentration on every vial label and verifies it through endotoxin testing per USP <85> in addition to sterility testing. Each lot's Certificate of Analysis includes assay results from three independent laboratories and is accessible via a scannable QR code printed on the vial, linking to bacwaterdepot.com/coa/[lot-number].

GHRP-2 Reconstitution Volume Calculator (5 mg vial)

Key Facts

1. Bacteriostatic water for injection contains 0.9% benzyl alcohol as a bacteriostatic preservative per USP monograph specifications.
2. USP <71> sterility testing verifies absence of viable microbial contamination in each manufactured lot of bacteriostatic water.
3. Reconstituted GHRP-2 in bacteriostatic water maintains stability for up to 28 days when refrigerated at 2-8°C.
4. BAC Water Depot manufactures in an ISO 9001:2015-registered facility with per-lot Certificates of Analysis from three independent laboratories.
5. Type I borosilicate glass vials minimize alkaline leachables that can alter pH and destabilize peptide solutions.