Upgrade your research setup with the Silver Reusable Peptide Pen V4—a refined evolution of the original V1 platform, now enhanced with a concealed-needle cap system and optimized cartridge utilization. Designed for researchers who prefer the extended V1 form factor but want improved efficiency and discretion, the V4 delivers precision, control, and less compound waste per cartridge. V1 Form Factor, Upgraded DesignThe V4 maintains the longer, balanced profile researchers appreciated in the V1, offering a stable grip and confident handling during administration. The overall body is slightly shorter than the original V1 for a more compact feel without sacrificing control. Needle-Hidden Cap SystemIncorporating the concealed cap design introduced in the V2, the V4 keeps the needle discreet during use and storage—ideal for cleaner bench setups and reduced visual exposure. Optimized 60 IU Delivery SystemUnlike the V1’s 80 IU capacity, the V4 is calibrated for up to ~60 IU. This shorter stroke length allows the internal plunger to travel further within the cartridge, reducing residual compound left behind and maximizing usable volume per fill. Precision Dosing ControlA consistent dial and smooth delivery mechanism provide repeatable, accurate micro-dosing across research applications. Standard 3 mL Cartridge CompatibilityCompatible with universal peptide/insulin-style cartridges up to ~60 IU, integrating seamlessly into existing lab workflows. Durable Silver Metal ConstructionFinished in clean silver metal, the V4 balances lightweight portability with long-term durability and a professional lab aesthetic. Package Includes(1) V4 reusable silver pen Check our other listings for additional cartridges and accessories. V4 hidden needle feature only works with thinner based needles. ⚠️ For Research Use Only – Not for human or veterinary use.
