Characteristics: A waterproof ink with excellent adhesion which is approved by the Department of Agriculture for use on food packaging. Surfaces: Glossy paper, painted surfaces, metal, hardwood, electronic parts, plastics, polyethylene, foil and cellophane, as well as most other non-porous and many porous surfaces.Suggested Application: Natural rubber stamp with Mark II, Opaque, cloth covered felt or stone pad. Drying Time:30-60 seconds Note: White is pigmented based