21G 5mL Luer Lock Syringe
- Third-party HPLC + mass-spec tested
- COA published for every lot
- Same-day weekday shipping before 2PM ET
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60-day money-back guarantee — if purity doesn't match the label, we refund it.
Sterile disposable 21-gauge 5mL Luer-lock mixing syringe for laboratory reconstitution.
Quality assurance
- Independently tested in the United States for purity and identity
- Every batch screened with third-party COA documentation
- ≥99% purity verified before release to inventory
- Vial QR code links directly to this lot's certificate
Storage & stability
Avoid freeze/thaw cycles · Protect from light · Keep refrigerated after reconstitution
Contents+
21G 5mL Luer Lock Syringe (21G · 5 mL), supplied as sterile disposable syringe for laboratory research applications.
Intended use+
This product is sold strictly for in-vitro laboratory research by qualified professionals. It is not for human or animal consumption, and no usage instructions are provided or implied.
Legal disclaimer+
Not evaluated or approved by the FDA. Nothing on this page constitutes a claim of therapeutic, diagnostic, or preventive benefit. See our full research disclaimer.
Terms of sale+
By purchasing, you affirm you are a qualified researcher (21+) and accept our Terms & Conditions and research-use-only requirements.
21G 5mL Luer Lock Syringe research overview
The 21G 5 mL Luer-lock syringe is a sterile, disposable mixing syringe stocked by TrueBond Labs as a companion supply for its research peptide catalog. The Luer-lock design threads the tip onto the syringe with a twist-locking collar, creating a secure connection that resists separation during fluid transfer, while the 21-gauge bore and 5 mL barrel are sized for moving diluent between vials at the bench.
Its role in the laboratory workflow is straightforward: drawing bacteriostatic water and delivering it into a vial of lyophilized research peptide during reconstitution. The graduated 5 mL barrel allows the volume of diluent to be measured as it is transferred, supporting consistent solution preparation from one vial to the next. This is a research supply item, sold without any usage instructions for the peptides it accompanies.
Each syringe is intended for a single use and should be discarded after one reconstitution task, in line with standard sterile-supply practice. Storage is simple — a clean, dry area at room temperature, with packaging left sealed to preserve sterility until the moment of use. Bundle pricing applies when ordering several, and they pair naturally with the 10 mL or 30 mL bacteriostatic water vials in our supplies range.
All information is provided for educational context on laboratory research only and is not a claim of therapeutic effect. This product is not for human or animal use.
The TrueBond difference
Compare on what's verifiable — documentation, not promises.
21G 5mL Luer Lock Syringe — frequently asked questions
What is a Luer-lock syringe?+
A Luer-lock syringe features a threaded collar at its tip that twists to lock an attachment firmly in place, rather than relying on a simple friction fit. The mechanism guards against leaks or detachment while liquid is being transferred. TrueBond Labs offers this style in a 21-gauge, 5 mL configuration as a sterile laboratory mixing supply.
What is a 21G 5mL syringe used for in peptide research?+
Its typical job is reconstitution support: measuring bacteriostatic water and transferring it into vials of lyophilized research peptide so the material can be prepared for in-vitro work. The 5 mL graduated barrel covers common diluent volumes in one draw. It is sold purely as a laboratory supply for research settings.
Are these syringes sterile and reusable?+
They arrive sterile and are strictly single-use. Reusing a disposable syringe compromises sterility and risks contaminating a verified peptide lot, so each unit should be discarded after one mixing task. Until needed, keep the syringes sealed in a dry, room-temperature location away from moisture and direct sunlight.
Can I add syringes to a peptide order?+
Absolutely — many researchers combine 21G Luer-lock syringes with bacteriostatic water and lyophilized peptides so an entire reconstitution setup arrives together. Syringes count toward the $250 free-shipping threshold for UPS 3-Day Select, ship US-only like the rest of the catalog, and fall under the same 60-day money-back guarantee.