iDenti-Pen Permanent Marking Pen — Dual Tip (2 PC)

The iDenti-Pen by Sakura is the go-to permanent marker for serious plant growers. Unlike standard markers that sit on the surface and eventually fade, the alcohol-solvent ink penetrates and bonds directly into plastic — including slick PVC and polypropylene labels. The result is a mark that resists rain, UV, and years of greenhouse humidity without lifting or smearing.

Two tips, one pen

• Fine bullet nib — tough fibre tip for general labelling and broader lines
• Extra-fine plastic tip — precision point for detail work, small labels, and tight writing

Why growers choose it

• Ink etches into plastic surfaces — doesn't just coat them
• Permanent and waterproof on PVC, polypropylene, vinyl, metal, and glass
• UV resistant — won't fade in the greenhouse or outdoors
• Low odour alcohol-based ink
• Works on our T-Type and Nursery Stake plant labels

Made a mistake?

iDenti-Pen ink is designed to last — that's the point. If you need to clean a label and start again, our Relabel Erasers will sort it out. You'll need a little elbow grease, which is exactly what you'd want from a pen this permanent.

Pack options

• 2 pen — keep one at the bench, one in the bag
• Box of 12 — best value for active collections and nurseries

Sourcing & shipping

We source supplies directly from specialist manufacturers in China — products we evaluated personally and chose because they're what serious growers and botanical collections actually use. Our Guangzhou team hand-selects and checks every item before it ships. Accessories ship separately from plants via Yun Express — flat rate $8, typically within 5–10 business days.