How to Mix Peptides with Bac Water:
The Ultimate Guide

The Science of Reconstituting Research Peptides

Correct reconstitution is the foundational step in maintaining the integrity of research peptides. Most laboratory compounds are delivered in a lyophilized (freeze-dried) state to ensure chemical stability. To prepare these for study, they must be rehydrated using a sterile diluent—most commonly Bacteriostatic Water (Bac Water).

What is Bacteriostatic Water?

Bacteriostatic Water for Injection is sterile water containing 0.9% Benzyl Alcohol. This specific concentration of alcohol serves as an antimicrobial preservative, inhibiting the growth of bacteria that could otherwise contaminate the vial after the first needle puncture.

This property allows a single vial to be used for multiple withdrawals over a 28-day period. Without this preservative, the solution would be strictly single-use and would need to be discarded immediately after the first seal break.

Universal Reconstitution Calculator

Use this tool to determine your base mixing logic. This calculator supports custom vial sizes for maximum research flexibility.

Sterile Mixing Protocol

• 1
  Sanitize: Thoroughly wipe both vial stoppers with 70% isopropyl alcohol and allow to air dry.
• 2
  Transfer: Draw the required volume of Bac Water. Aim the needle at the side wall of the peptide vial.
• 3
  Drip: Let the water trickle down the glass. Do not spray directly onto the powder clump.
• 4
  Swirl: Roll the vial gently between your hands. Never shake, as shaking can damage delicate peptide bonds.

Specific Peptide Guides

Reconstitution FAQs