4 oz bottle of fast drying ink that drys in about 15 seconds on most non-porous surface (plastic, metal, glass, etc.). Made by Pro-Color for Stewart Superior Co., these inks are highly resistant to chemical removal. (ie: classified as "permanent" ink). Usually applied on a dry ink pad and then with a rubber hand stamp. Also works well in conjunction with our solid neoprene inspection stamps.
Ultra Perm ink colors are obtained by using non-fading dyes for Black, Red, Blue, Green and Purple and non-fading pigments (which give the ink high opacity) for the White and Yellow colors.