Reusable Peptide Pen – V2

A reusable peptide pen for standard 3 mL cartridges

The ShotLog Reusable Peptide Pen V2 is a refillable metal dispensing pen that dials single-unit doses from 1 to 60 units. It takes standard 3 mL glass pen cartridges and screw-on universal pen needles, so you buy refills when you need them, from us or any other supplier. Load a cartridge, attach a needle, dial the number of units and press.

Built to last, designed to feel right

The body is durable metal, shaped to sit comfortably in your hand and easy to work. The piston moves smoothly through every click. It’s built for long-term use, and when a cartridge runs out you load a fresh one into the same pen.

How dialing units works

Each click of the dial is 1 unit. On a 3 mL cartridge, 1 unit is 0.01 mL, so a full cartridge holds 300 units and the 60-unit maximum is 0.6 mL. Go by the number in the dose window to set your amount. If you dial past your number, turn the dial back down. If the window stops above 0 after you press, the cartridge ran short of solution for that amount.

What fits this pen

• Cartridges: standard 3 mL glass pen cartridges with a long stopper, like our steam-sterilized 3 mL glass cartridges.
• Needles: screw-on universal pen needles, like our 31G and 32G universal pen needles. Use a new needle each time.
• Filling: vent needles let air out of a cartridge while you fill it.
• Storage: the Cartridge Vault holds four spare cartridges.

Which ShotLog pen is right for you?

• Reusable Peptide Pen V2, Original Style (this pen): 1 to 60 units in single-unit clicks, metal body, lots of colors; the cartridge holder screws on.
• Reusable Peptide Pen V2, New Style: the same 1 to 60 unit mechanism in a metal body; its cartridge holder twists and pulls off, then pushes on and twists to lock.
• 510(k) Reusable 80 Unit Pen for 3 mL Cartridges: up to 80 units in 0.01 mL steps, with an audible click for each unit and a carrying case.
• Starting from scratch? The Ultimate Research Kit bundles this pen with five 3 mL cartridges and a box of 100 pen needles.

See them side by side on the peptide pens page.

Setting up your pen

1. Find the cartridge holder. It is part of the pen body: pull the cap straight off (do not unscrew) to reveal it.
2. Unscrew the cartridge holder from the pen body and take out the old cartridge, if there is one. Reset the piston: if the piston rod sticks out, push it straight back into the pen by hand until it stops.
3. Drop a filled 3 mL cartridge into the holder with the crimped cap and septum at the top, toward the needle end, and the rubber stopper at the bottom facing the pen body. Screw the holder back on until it’s fully seated.
4. Prime the pen: before you attach a needle, turn the dose knob to 50 or 60 and press the button until the piston rod meets the cartridge’s rubber stopper. You may need to repeat this a few times. Do not force it.
5. Wipe the cartridge’s rubber seal with an alcohol swab and screw on a new pen needle.
6. Clear the air: point the needle up, dial 1 and press the button slowly until a bead of liquid appears at the tip. The pen is now ready to dispense.
7. Dial your amount and press the button all the way, holding it for 5 to 10 seconds.

After each use, remove the needle with its outer cap, dispose of it in a sharps container and put the pen cap back on. Never store the pen with a needle on. Prefer video? Watch our how-to videos.

Product Details

• Model: SHOTLOG Peptide Pen V2
• Materials: Durable metal construction
• Compatibility: Standard 3 mL pen cartridges & universal pen needles
• Dose range: 1 to 60 units in single-unit increments
• Colors: choose from the color options above

Includes

1 – Cartridge

Important Use Disclaimer

For Research Use Only

Not for human or animal therapeutic, clinical, or diagnostic use.
Not FDA-approved. Buyer assumes all responsibility for proper handling, storage, and lawful use.

How to Use

Video Guide

How to use

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