Frequently Asked Questions
Product & compatibility
Which cartridges fit my pen?
All MODTECH 3mL glass cartridges fit the V1, V2, and V3 pens. One cartridge, every pen, no compatibility guesswork.
Are the cartridges actually sterile?
Yes. Every cartridge is steam sterilized and individually sealed in a CE/ISO 11607 certified self sealing pouch, the same packaging standard used for medical instruments. If the seal is intact, the cartridge is sterile. Open it right before use.
Is anything prefilled? What exactly do I get?
Hardware only. Pens and cartridges ship empty. No substances of any kind are included with any MODTECH product.
Are pen tips included?
No, tips are sold separately. MODTECH currently supplies the pens and sterile cartridges. The pens accept standard screw on pen tips, and we recommend using a fresh tip for each session.
How precise is the dial?
The V2 dial has 60 click stop increments. Each click is a fixed, repeatable step, so you get the same amount every time without reading graduation marks.
Is the pen reusable? How long does it last?
Yes. The pen body is machined from solid aluminum and designed for long term reuse. When a cartridge runs empty, swap in a fresh sealed one in seconds.
Can I store it in the fridge with the cartridge loaded?
Yes. The pen is built for refrigerated storage between sessions, cartridge in place.
Shipping & returns
How fast will my order arrive?
Orders ship from Amazon's U.S. fulfillment centers. Processing takes 1 to 2 business days, then standard delivery takes 3 to 5 business days, or 1 to 2 business days with Buy with Prime. You get tracking by email.
What does the package look like?
Standard Amazon packaging. Nothing on the outside indicates what's inside.
What if I'm not happy with it?
You're covered by our 30 day money back guarantee. Email tfortech@modtechsupply.net and we'll make it right with a replacement or full refund. Full guarantee details here.
The fine print
Are these medical devices?
No. MODTECH products are precision hardware sold for laboratory and research use only. They are not medical devices, and no product includes or is sold with any substance.
Still have a question? Email tfortech@modtechsupply.net and the owner answers within one business day.