How It Works

Prep once. Dial. Done.

The old routine: a vial, a fresh syringe, and a careful draw against tiny graduation marks, every single session. The MODTECH routine: fill a sterile cartridge once, load the pen once, and every session after that takes about ten seconds. Grab it, dial it, dispense, put it back.

One time setup (about two minutes)

Fill a sterile cartridge. Each MODTECH 3mL glass cartridge arrives individually sealed in a CE/ISO 11607 certified sterilization pouch. Open the pouch right before use and transfer your reconstituted solution into the cartridge.
Load the pen. Drop the cartridge into the pen body, screw the housing closed, and attach a fresh pen tip (tips are sold separately).
Prime it. Dial one or two increments and dispense until liquid appears at the tip. You're set.

Every session after (about ten seconds)

Take the pen from the fridge.
Load a sterile, unused pen tip.
Dial your exact amount. Every click of the 60 increment dial is a precise, repeatable step.
Press, dispense, done. Back in the fridge until next time.

Why a pen instead of a vial and syringe?

MODTECH Pen vs vial and syringe comparison covering prep time, measuring, sterility, consistency, storage, and stability

	Vial + syringe	MODTECH pen
Prep per session	Draw and measure every time	None. The cartridge stays loaded
Measuring	Eyeballing tiny graduation marks	Click stop dial with 60 precise increments
Sterility	Vial septum punctured over and over	Sealed cartridge system, fresh tip each session
Consistency	Varies with technique	Same click, same amount, every time
On the shelf	Vial, loose syringes, clutter	One pen that fits in the fridge door
Stability	Solution exposed to air each time	Cartridge stays sealed with minimal air exposure

Storage between sessions

The pen is built to live in the refrigerator between sessions. The solid aluminum body handles cold storage without issue, with the cartridge loaded. A 3mL cartridge covers many sessions; when it runs empty, swap in a fresh sealed one in seconds.