You are here: HomeOnline StorePhosphors Dyes & InksVisibleBVIS-CIRPenSm: Black Visible and Clear IR Writing Pen
BVIS-CIRPenSm: Black Visible and Clear IR Writing Pen $9.50 each + – Add to cart The add to cart button will appear once you select the values above Contact us for more information Black Visible and Clear in the Infrared above 800nm Writing Pen. This pen writes black in visible light and buts becomes transparent when viewed with an IR sensitive camera above 800nm.