Peptide Calculator – Use to Calculate Reconstitution

Our peptides are shipped in a freeze-dried form, as a small puck of powder inside a glass vial. This "lyophilization" (freeze-drying) is done to remove all moisture and air to ensure long-term stability.

Our Recommendation: Store these lyophilized peptides in the refrigerator to maintain their potency, immediately after receiving them in the mail.

For Long-Term Storage (intended use in 1-3 years): Store lyophilized peptides in a freezer (at least -20c).

Solvents like Bacteriostatic water don't need to be stored in the refrigerator (though you may). They can simply be placed in a cool, dry environment away from light.

Being clean is the foundation of successful peptide research. Prioritize sterility by thoroughly washing hands and wearing sterile gloves before handling any materials.

Essential Tool Checklist:

• Lyophilized Peptide (Glass Vial)

• Sterile Syringe

• Solvent (Bacteriostatic Water)

• Alcohol Wipes

• Protective Gloves

A sterile environment is critical for maintaining the potency and bioactivity of the compound.

Phase 1: Stable & Sterile Environment

Before reconstitution, ensure the peptides and solvent have reached room temperature and the research environment is clean.

• Thermal Acclimation:If your lyophilized peptide powder was stored in the refrigerator, take the vial out and let it sit for 15-30 minutes to reach room temp. Ensure your solvent is also at room temp. Using cold solutions can interfere with the mixing process, cause damage and clump.

• Sterilize the Environment: Remove the central portion of the metal caps from both vials. Thoroughly disinfect the upper surfaces with a medical-grade alcohol swab to maintain absolute sterility.

Phase 2: Solvent Selection

Solvent choice is determined by the specific solubility profile and properties of the peptide being studied:

• Bacteriostatic Water: The industry standard for the majority of research applications. We recommend and provide it for this purpose.

Phase 3: The Hydration Sequence

Precise handling is required when mixing the solvent with the lyophilized powder to avoid molecular shearing.

• The "45-Degree" Method: Using a sterile syringe, withdraw the required solvent. Tilt the peptide vial at a 45° angle and aim the needle toward the interior glass wall.

• Controlled Injection: Inject the solvent slowly, allowing it to run gently down the side of the vial. Introduce the liquid dropwise to prevent the formation of bubbles or foam.

• Gentle Integration: Do not vortex or shake the vial aggressively. Use a controlled, gentle swirling or tilting motion until the powder is fully integrated and the solution is homogenous.

Phase 4: Purity Verification

The final solution must be completely transparent and free of visible undissolved particles. If the solution remains cloudy or particles persist, a brief period of sonication (exposure to ultrasonic waves) may be employed to assist in the dissolution of stubborn compounds.

Precise temperature management is the primary defense against molecular degradation for long-term storage.

Post-Reconstitution: Once hydrated, peptides become significantly more susceptible to degradation.

• Standard Storage (Short-Term): For active research, store the reconstituted solution at 4°C in a refrigerator with a stable temperature. When using Bacteriostatic (BAC) water, most peptides remain stable and potent for up to 30 days under these conditions.

• Extended Storage (Liquid Aliquoting): If your research timeline exceeds 30 days, you can make aliquots (divided, single-use portions of your solution) and store them in the freezer at -20°C to prevent degradation from constant temperature fluctuations.

• Thawing Protocol: To avoid thermal shock and molecular shearing, thaw your frozen aliquot by transferring it directly to the refrigerator. Let it thaw slowly for at least 60 minutes. After that, let it sit at room temperature for 15–30 minutes before usage.

• Critical Note: Avoid repeated freeze-thaw cycles. Every transition between liquid and solid states creates mechanical stress on the peptide bonds, which can reduce total biological activity.

For a full breakdown on molecular integrity, view our Official Stability & Storage Data Sheet.

Keep these factors in check to ensure researcher safety and to preserve peptide potency.

• DO NOT USE Non-Sterile Solvents: Using tap or distilled water introduces microbial contaminants will destroy peptide integrity and could cause harm to the researcher. DO NOT USE TAP WATER. Use bacteriostatic water, which is clinically sterile.

• Avoid Mechanical Stress: Aggressive shaking "shears" delicate peptide bonds, rendering the compound inactive.

• Avoid Ambient Temperature Exposure: Leaving reconstituted solutions at room temperature for extended periods leads to rapid enzymatic breakdown.

• Do Not Expose Reconstituted Peptides to Repeated Freeze & Thaw Cycles: If freezing reconstituted solutions for long-term storage, always divide the liquid into single-use portions. This prevents repeated freeze-thaw cycles on a bulk portion, which cause mechanical stress and degrade the peptide’s molecular potency.