Reusable Pen Replacement Glass Cartridges 3ml

This is a small refillable glass container designed for a reusable injection-style pen device. These cartridges hold up to 3 milliliters of liquid and are commonly made from borosilicate glass, which is durable and chemically resistant. They’re used in some medical, laboratory, cosmetic, or peptide-dispensing pen systems.

Typical features include:

• 3ml capacity — holds a measured amount of liquid.
• Reusable or replaceable — you swap the cartridge instead of replacing the whole pen.
• Sterile packaging — many come individually sterilized.
• Glass construction — helps preserve sensitive compounds better than some plastics.
• Compatibility-specific — This cartridges only fit pens made for Lilly products