# Insulin Cartridge Pen Explained for Bench Researchers - facts

Canonical page: https://www.preppinpeppers.com/blogs/the-lab/insulin-cartridge-pen
Type: Lab article

## TL;DR

An insulin cartridge pen is a handheld device that holds a 3 ml cartridge and advances its plunger by the amount set on a scale; matching plunger height

## Facts Index

| Fact ID | Category | Entity | Attribute | Value | Source | Evidence |
|---|---|---|---|---|---|---|
| insulin-cartridge-pen:title | identity | Insulin Cartridge Pen Explained for Bench Researchers | title | Insulin Cartridge Pen Explained for Bench Researchers | Lab article (https://www.preppinpeppers.com/blogs/the-lab/insulin-cartridge-pen) | https://www.preppinpeppers.com/blogs/the-lab/insulin-cartridge-pen |
| insulin-cartridge-pen:published | identity | Insulin Cartridge Pen Explained for Bench Researchers | published | 2026-11-07 | Lab article (https://www.preppinpeppers.com/blogs/the-lab/insulin-cartridge-pen) | https://www.preppinpeppers.com/blogs/the-lab/insulin-cartridge-pen |
| insulin-cartridge-pen:author | identity | Insulin Cartridge Pen Explained for Bench Researchers | author | PreppinPeppers Editorial Team | Lab article (https://www.preppinpeppers.com/blogs/the-lab/insulin-cartridge-pen) | https://www.preppinpeppers.com/blogs/the-lab/insulin-cartridge-pen |
| insulin-cartridge-pen:topics | identity | Insulin Cartridge Pen Explained for Bench Researchers | topics | insulin cartridge pen, Guides, research | Lab article (https://www.preppinpeppers.com/blogs/the-lab/insulin-cartridge-pen) | https://www.preppinpeppers.com/blogs/the-lab/insulin-cartridge-pen |
| insulin-cartridge-pen:summary | content | Insulin Cartridge Pen Explained for Bench Researchers | summary | An insulin cartridge pen is a handheld device that holds a 3 ml cartridge and advances its plunger by the amount set on a scale; matching plunger height | Lab article (https://www.preppinpeppers.com/blogs/the-lab/insulin-cartridge-pen) | https://www.preppinpeppers.com/blogs/the-lab/insulin-cartridge-pen |
| insulin-cartridge-pen:section-1 | content | Insulin Cartridge Pen Explained for Bench Researchers | section | What is an insulin cartridge pen? | Lab article (https://www.preppinpeppers.com/blogs/the-lab/insulin-cartridge-pen) | https://www.preppinpeppers.com/blogs/the-lab/insulin-cartridge-pen |
| insulin-cartridge-pen:section-2 | content | Insulin Cartridge Pen Explained for Bench Researchers | section | What parts make up a pen injector and its cartridge? | Lab article (https://www.preppinpeppers.com/blogs/the-lab/insulin-cartridge-pen) | https://www.preppinpeppers.com/blogs/the-lab/insulin-cartridge-pen |
| insulin-cartridge-pen:section-3 | content | Insulin Cartridge Pen Explained for Bench Researchers | section | How does a reusable cartridge pen work at the bench? | Lab article (https://www.preppinpeppers.com/blogs/the-lab/insulin-cartridge-pen) | https://www.preppinpeppers.com/blogs/the-lab/insulin-cartridge-pen |
| insulin-cartridge-pen:section-4 | content | Insulin Cartridge Pen Explained for Bench Researchers | section | Why does plunger height matter when you pair a cartridge with a pen? | Lab article (https://www.preppinpeppers.com/blogs/the-lab/insulin-cartridge-pen) | https://www.preppinpeppers.com/blogs/the-lab/insulin-cartridge-pen |
| insulin-cartridge-pen:section-5 | content | Insulin Cartridge Pen Explained for Bench Researchers | section | What are the most common cartridge pen mistakes? | Lab article (https://www.preppinpeppers.com/blogs/the-lab/insulin-cartridge-pen) | https://www.preppinpeppers.com/blogs/the-lab/insulin-cartridge-pen |
| insulin-cartridge-pen:section-6 | content | Insulin Cartridge Pen Explained for Bench Researchers | section | What do researchers get wrong about cartridge pens? | Lab article (https://www.preppinpeppers.com/blogs/the-lab/insulin-cartridge-pen) | https://www.preppinpeppers.com/blogs/the-lab/insulin-cartridge-pen |
| insulin-cartridge-pen:section-7 | content | Insulin Cartridge Pen Explained for Bench Researchers | section | Does the cartridge material matter for leachables? | Lab article (https://www.preppinpeppers.com/blogs/the-lab/insulin-cartridge-pen) | https://www.preppinpeppers.com/blogs/the-lab/insulin-cartridge-pen |
| insulin-cartridge-pen:section-9 | content | Insulin Cartridge Pen Explained for Bench Researchers | section | Related reading | Lab article (https://www.preppinpeppers.com/blogs/the-lab/insulin-cartridge-pen) | https://www.preppinpeppers.com/blogs/the-lab/insulin-cartridge-pen |
| insulin-cartridge-pen:product-gansulin-metal-peptide-pen | products | Insulin Cartridge Pen Explained for Bench Researchers | references product | Gansulin Pen · Reusable Click-Dial, 3 ml (1-60 Units) | Lab article (https://www.preppinpeppers.com/blogs/the-lab/insulin-cartridge-pen) | https://www.preppinpeppers.com/products/gansulin-metal-peptide-pen |
| insulin-cartridge-pen:product-gansulin-3ml-cartridge | products | Insulin Cartridge Pen Explained for Bench Researchers | references product | Gansulin-Compatible 3 ml Glass Cartridge for Pens (10-Pack) | Lab article (https://www.preppinpeppers.com/blogs/the-lab/insulin-cartridge-pen) | https://www.preppinpeppers.com/products/gansulin-3ml-cartridge |
| insulin-cartridge-pen:product-amber-3ml-cartridge | products | Insulin Cartridge Pen Explained for Bench Researchers | references product | Amber 3 ml Glass Cartridges for Pens (10-Pack) | Lab article (https://www.preppinpeppers.com/blogs/the-lab/insulin-cartridge-pen) | https://www.preppinpeppers.com/products/amber-3ml-cartridge |
| insulin-cartridge-pen:product-bacteriostatic-water-30ml | products | Insulin Cartridge Pen Explained for Bench Researchers | references product | Bacteriostatic Water 30 ml Multi-Dose Vial (Pfizer Hospira, USP) | Lab article (https://www.preppinpeppers.com/blogs/the-lab/insulin-cartridge-pen) | https://www.preppinpeppers.com/products/bacteriostatic-water-30ml |
| insulin-cartridge-pen:source-pubmed-ncbi-nlm-nih-gov | source | Insulin Cartridge Pen Explained for Bench Researchers | cites | Jenke, Expert Opin Drug Deliv 2014: Extractables and leachables considerations for prefilled syringes - pubmed.ncbi.nlm.nih.gov | Lab article (https://www.preppinpeppers.com/blogs/the-lab/insulin-cartridge-pen) | https://pubmed.ncbi.nlm.nih.gov/24955780/ |
| insulin-cartridge-pen:source-pubmed-ncbi-nlm-nih-gov-2 | source | Insulin Cartridge Pen Explained for Bench Researchers | cites | Bohannon, Postgrad Med 1999: Insulin delivery using pen devices. Simple-to-use tools may help young and old alike - pubmed.ncbi.nlm.nih.gov | Lab article (https://www.preppinpeppers.com/blogs/the-lab/insulin-cartridge-pen) | https://pubmed.ncbi.nlm.nih.gov/10560468/ |

## FAQ

### What is an insulin cartridge pen?

It is a handheld device that holds a cartridge of liquid and advances a plunger by the amount set on its scale. Pens were developed for human insulin delivery, and the format is now also used at the research bench.

### Which cartridges work with the Gansulin Pen?

The Gansulin Pen takes standard 3 ml (300-unit) glass cartridges with the 11 mm long plunger, including our clear and amber 3 ml cartridges. Pens do not include cartridges unless a kit says so.

### How do I check the plunger height of a 3 ml cartridge?

Hold the cartridge upright in good light and set a millimetre ruler against the outside of the tube. Read the rubber from its flat bottom edge to its top edge. For our pens, the match is 11 mm.

### Can I see the plunger through an amber 3 ml cartridge?

Yes. On both clear and amber 3 ml cartridges the rubber plunger is visible through the glass, so you can measure its height from the outside.

### Do the V1, V2 and V3 pens use the same plunger height as Gansulin?

Yes. The Gansulin, V1, V2 and V3 pens are all built for the 11 mm long plunger used by our standard and amber 3 ml cartridges.

### What are leachables in prefilled syringes?

Leachables are chemicals that move from a container's materials into the liquid inside. A 2014 review by Jenke says they can accumulate in the product and interact with its ingredients, affecting stability.

### What is the difference between a reusable pen and a prefilled pen?

A reusable pen stays on the bench while you swap in new cartridges. A prefilled pen arrives with its cartridge already loaded. Our pens are the reusable kind and take empty cartridges you load yourself.

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