Peptide Handling Guide

Everything you need to know about storing, reconstituting, and handling research peptides properly

Essential Tips

Follow these fundamentals every time you handle research peptides

Always Refrigerate

Store all peptides at 2–8°C (refrigerator temperature). Both reconstituted and unreconstituted vials must stay cold

Use Bacteriostatic Water

Always reconstitute with bacteriostatic (BAC) water. Never sterile water or saline. The alcohol prevents bacterial growth

Sterile Technique

Wipe every vial stopper with an alcohol swab before each use. Use a fresh syringe and needle every time

Protect from Light

Peptides degrade when exposed to direct light. Keep vials in their original box and store in a dark section of your refrigerator

Mind the Shelf Life

Unreconstituted peptides last months when refrigerated. Once mixed with BAC water, use within 4–6 weeks

Inject Slowly

When adding BAC water to a peptide vial, aim the stream against the glass wall. Not directly onto the powder

Reconstitution Step by Step

How to properly mix your lyophilized peptide with bacteriostatic water

Gather Your Supplies

You'll need: the peptide vial, bacteriostatic water, an alcohol swab, and a syringe with needle. Make sure everything is sealed and unexpired

Clean the Vial Stoppers

Wipe the rubber stopper of both the peptide vial and the BAC water vial with an alcohol swab. Let them air dry for a few seconds

Draw the BAC Water

Using a clean syringe, draw the desired amount of bacteriostatic water. Use our calculator to determine the exact volume for your target concentration

Add Water to the Peptide

Insert the needle into the peptide vial and aim the stream at the inside wall of the glass. Let the water drip down slowly. Never spray directly onto the powder!

Swirl Gently

Once the water is added, gently roll the vial between your fingers. Do not shake, vortex, or agitate the vial — peptides are fragile molecules

Store and Label

Write the reconstitution date and concentration on the vial. Return it to the refrigerator immediately

Important Warnings

Never use regular sterile water! It has no preservative and allows bacteria to grow within hours.
Do not freeze reconstituted peptides. Freezing causes ice crystals that destroy the peptide structure.
Avoid shaking vials. Aggressive mixing denatures the peptide and reduces potency.
Discard any vial that appears cloudy, discolored, or has visible particles after reconstitution.
All products are sold strictly for research and educational purposes only.