You are here: Home Online Store Phosphors Dyes & Inks Infrared (IR) Infrared Inks YVIS-CIRPenSm: Yellow Visible and Clear IR Writing Pen
YVIS-CIRPenSm: Yellow Visible and Clear IR Writing Pen $9.50 each + – Add to cart Contact us for more information Yellow Visible and Clear in the Infrared above 800nm Writing Pen. This pen writes yellow in visible light and buts becomes transparent when viewed with an IR sensitive camera above 800nm.