Peptide Critic Research Pen V3.1

Upgrade your research setup with the Green Reusable Peptide Pen V3.1—a sleek, durable, and user-friendly metal pen designed for precise, consistent operation.

The V3.1 is an improved version of the V3, with factory-corrected updates addressing the issues identified in the previous model. It maintains the same core specifications while providing more reliable and repeatable results.

Improved V3.1 Design: Factory revisions address the issues found in the original V3 for smoother, more dependable operation.

Protective Pen Cap: A step up from the V2’s hidden-needle design, the V3.1 features a traditional removable pen cap for simple handling, storage, and protection.

Accurate and Repeatable Results: Designed to support consistent dose selection and dependable performance across repeated research applications.

Smooth Dosing Mechanism: Provides controlled operation with a smooth push and minimal clicking for enhanced precision and ease of use.

Standard 3 mL Cartridge Compatibility: Compatible with universal peptide and insulin-style cartridges, with dosing up to approximately 60 IU.

Durable Metal Construction: The sturdy metal body combines lightweight portability with long-term reliability.

Package Includes: One Green Reusable Peptide Pen V3.1.

Check our other listings for compatible replacement cartridges.

⚠️ For Research Use Only — Not for human or veterinary use.