SS-31 10mg Reconstitution: How to Mix a 10 mg Vial Correctly

To reconstitute a 10 mg SS-31 vial, slowly inject 1–2 mL of bacteriostatic water down the inside wall of the vial, swirl gently until the powder dissolves completely, and store the solution in the refrigerator. A 10 mg vial mixed with 2 mL of bacteriostatic water yields 5 mg/mL, the most common working concentration in research settings. Never shake the vial: SS-31 is a fragile tetrapeptide, and vigorous agitation or foaming can damage it.

What Is SS-31?

SS-31, also known as elamipretide, is a synthetic tetrapeptide studied for its interaction with cardiolipin on the inner mitochondrial membrane. Researchers use it to explore mitochondrial energy production and oxidative stress in cell and animal models.

SS-31 is not FDA-approved for human use in the United States. Suppliers sell it as a research chemical, and the label almost always states "for research use only — not for human consumption."

Most vendors ship the peptide as a lyophilized powder in 5 mg, 10 mg, or 50 mg vials. The dry powder is far more stable than the reconstituted liquid, which is why it is shipped that way.

Why the 10 mg Vial Is a Popular Size

A 10 mg vial balances cost and flexibility. It is small enough that a single vial does not sit in the refrigerator for months, but large enough to allow several different concentrations depending on how much water you add.

Vials that are too small force you to measure tiny volumes; vials that are too large push you toward dilute solutions that waste syringe capacity. A 10 mg vial avoids both problems for most bench work. Vendors listing ss 31 peptide for sale online usually price 10 mg vials near the middle of their range.

How Much Bacteriostatic Water to Add

There is no single correct volume. The right amount depends on the concentration you need and the syringe you will use to measure it. The table below covers the common choices for a 10 mg vial.

Bacteriostatic water added	Final concentration	Amount in 0.1 mL (10 units on a U-100 syringe)	Amount in 0.01 mL (1 unit)
1 mL	10 mg/mL	1.0 mg	0.10 mg
2 mL	5 mg/mL	0.5 mg	0.05 mg
5 mL	2 mg/mL	0.2 mg	0.02 mg
10 mL	1 mg/mL	0.1 mg	0.01 mg

Two milliliters is the most common choice because 5 mg/mL divides cleanly into small measurements without forcing a large injection volume. If you need very fine increments, 5 mL of water gives you 2 mg/mL and makes tiny doses easier to measure accurately.

Write the water volume, the final concentration, and the date on the vial label as soon as you finish. Anyone who has compared ss-31 reconstitution and dosage protocols knows that labeling mistakes cause more errors than arithmetic mistakes.

Step-by-Step SS-31 10 mg Reconstitution

1. Clear a clean workspace and wash your hands. Wear gloves if you are handling more than one vial.
2. Take the SS-31 vial and the bacteriostatic water out of the refrigerator and let both reach room temperature.
3. Remove the plastic caps and swab both rubber stoppers with a fresh 70% isopropyl alcohol pad. Let them air-dry for a few seconds.
4. Draw your chosen volume of bacteriostatic water into a new syringe with a new needle.
5. Insert the needle into the SS-31 vial at a slight angle and aim the stream at the glass wall, not directly at the powder.
6. Let the vacuum pull the water in, or push the plunger slowly if the vial is not under vacuum. A fast stream can denature the peptide.
7. Withdraw the needle and swirl the vial gently between your fingers until the solution is clear. Do not shake it.
8. Check the result. A properly dissolved vial is clear and colorless; cloudiness, flakes, or foam mean the peptide has not fully dissolved or has been damaged.
9. Label the vial with the date and concentration, then refrigerate it.

If a small amount of powder sticks to the stopper, let the vial sit upright for a few minutes and swirl again rather than shaking it loose. Patience solves almost every reconstitution problem.

Storage and Stability After Mixing

Lyophilized SS-31 should stay frozen at -20°C or colder, protected from light and moisture. In that state it keeps for many months, and some suppliers list stability of a year or more.

Once reconstituted, keep the vial at 2°C to 8°C and away from direct light. Most researchers use a reconstituted vial within two to four weeks, though exact stability depends on the peptide, the diluent, and how often the stopper is punctured.

Bacteriostatic water contains 0.9% benzyl alcohol, which slows bacterial growth and makes a multi-dose vial practical. Sterile water has no preservative, so a vial mixed with sterile water should be used faster and handled more carefully.

Avoid repeated freeze-thaw cycles of the liquid. If you need to split a batch, aliquot it into smaller vials before freezing rather than freezing and thawing the same container.

Dosing Math and Safety Considerations

Reconstitution is only half of the calculation. You also need to convert the concentration into the volume you draw, and that step is where most mistakes happen. Keep a written record of the math so you can check it a second time.

SS-31 is a research chemical, not an approved medication. Nothing in this article is medical advice, and anyone considering use in humans should consult a licensed healthcare professional.

Animal studies have examined elamipretide in cardiac, kidney, and neuromuscular models, but human data remain limited and mixed. Reviews of ss-31 peptide benefits and side effects are often written from an athletic or anti-aging perspective, so read them with a critical eye.

Some protocols look at ss-31 and mots-c together for combined mitochondrial and metabolic research. Other researchers investigate non-injection formats, including an ss-31 peptide nasal spray, though absorption through that route is not well characterized.

Common Reconstitution Mistakes

• Shaking instead of swirling. Agitation creates foam and can shear the peptide.
• Blasting water onto the powder. Aim at the glass wall and let the liquid run down.
• Using tap water or an old bottle of bacteriostatic water. Always use a fresh, sealed diluent.
• Skipping the label. Unlabeled vials with unknown concentrations get discarded or, worse, mismeasured.
• Storing the mixed vial at room temperature. Heat and light accelerate degradation.
• Assuming every vendor's powder behaves the same. Purity and fill vary, so verify certificates of analysis when you can.

Good technique is boring: clean hands, fresh alcohol pads, a slow stream of water, a gentle swirl, and a labeled vial in the fridge. That routine protects both the peptide and your results.

COMMON QUESTIONS

Frequently Asked Questions

How much bacteriostatic water should I add to a 10mg SS-31 vial?

There is no single required volume, because the amount of water sets the concentration. Adding 1 mL gives 10 mg/mL, 2 mL gives 5 mg/mL, 5 mL gives 2 mg/mL, and 10 mL gives 1 mg/mL. Most researchers add 2 mL because 5 mg/mL is easy to measure in small increments.

How long does reconstituted SS-31 last in the refrigerator?

Most researchers store reconstituted SS-31 at 2°C to 8°C and use it within two to four weeks. Bacteriostatic water contains benzyl alcohol, which slows bacterial growth, but stability still depends on handling, light exposure, and how often the stopper is punctured. Discard the vial if the solution turns cloudy or shows floating particles.

Is SS-31 the same as elamipretide?

Yes. SS-31 is the research name for elamipretide, a mitochondria-targeted tetrapeptide. SS-31 is not FDA-approved for human use in the United States and is sold as a research chemical only.