iDenti-Pen Permanent Marking Pen — Dual Tip

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 Long Strip plant labels 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 throughout China — products we evaluated in person at the Canton Fair and chose because they're what serious growers and botanical collections actually use. Our team member Lucas manages our Guangzhou warehouse, hand-selecting and checking every item before it ships. Supplies are fulfilled separately from plants, direct from Guangzhou via Yun Express, typically arriving within 5–10 business days.