A complete peptide pen kit for the research bench includes the reusable pen device, 3 ml glass cartridges for holding reconstituted peptide, bacteriostatic water for reconstitution, and a protective carry case for transport and storage. PreppinPeppers assembles these components into functional kits that enable researchers to handle peptide working solutions with precision and contamination control.

The Pen: Precision Dosing Hardware

The Gansulin metal pen at the center of the kit.
The Gansulin metal pen at the center of the kit.

The Gansulin reusable pen delivers dial-a-dose functionality for accurate peptide aliquoting. Metal construction provides durability for repeated use, and the dose-setting mechanism allows researchers to dispense consistent volumes without manual pipetting. This is particularly useful when running multiple experiments requiring the same peptide dose across different days or when minimizing freeze-thaw cycles by pre-loading cartridges with working solutions.

3 ml Glass Cartridges: The Reconstitution Vessel

Standard 3 ml glass cartridges.
Standard 3 ml glass cartridges.

The 3 ml glass cartridges thread directly into the pen body and serve as the primary container for reconstituted peptide solutions. Glass construction is chemically inert and won't interact with peptide sequences, and the volume capacity accommodates typical reconstitution volumes for research-scale lyophilized peptide batches. The sealed cartridge design reduces exposure to ambient contamination during storage and dosing.

Bacteriostatic Water: The Reconstitution Medium

The hard-shell carry case that completes the kit.
The hard-shell carry case that completes the kit.

Bacteriostatic water is the standard reconstitution solvent for research peptides, containing 0.9% benzyl alcohol to inhibit microbial growth in the reconstituted solution. Each 30 ml vial provides sufficient volume for multiple reconstitutions, and the preservative ensures that once a peptide is reconstituted, the solution remains usable across multiple withdrawals over the study period. Researchers should note that bacteriostatic water is for laboratory solution preparation only.

Carry Case: Protection and Organization

A dedicated carry case protects the assembled pen and cartridge from physical damage during transport between lab spaces or to collaborator sites. The reusable case designed for 3 ml cartridge pens keeps components together and prevents the cartridge from loosening during movement. This is especially valuable when maintaining a sterile field or when the same pen setup is used across multiple workstations.

PreppinPeppers Assembly

PreppinPeppers offers these components as individual items or as a coordinated kit. The advantage of ordering together is ensuring component compatibility—all items are confirmed to work with the 3 ml cartridge format and the Gansulin pen threading. Researchers can mix and match quantities based on their study requirements, whether running a single project or maintaining ongoing peptide work requiring multiple cartridges.

For a complete peptide pen kit, we recommend the Gansulin reusable pen, paired with 3 ml glass cartridges for reconstitution, bacteriostatic water for peptide solubilization, and a carry case for protection and organization. This four-component setup provides everything needed for accurate peptide handling in laboratory workflows.

From The Lab