3ml Sterile Vial Cartridge for Auto Injector Pens designed for secure, accurate, and convenient liquid storage and dispensing. Made from high-quality medical-grade clear glass with durable sealing components, this refillable 3ml cartridge is compatible with most reusable auto injector pens and precision delivery systems. Individually sealed in sterile packaging for enhanced cleanliness and safety during laboratory, peptide, and research applications. Features a leak-resistant design, smooth plunger movement, and crystal-clear visibility for easy volume monitoring. Ideal for professional research use, precision dosing systems, and sterile liquid handling applications.