Drying time: 10-15 seconds. Characteristics: 1250 is the ink specifically formulated for the use with stone stamp pads, and Mark II stamp pads. It is an excellent all-purpose ink which is waterproof and maintains great adhesion on resin coated photographic paper, as well as both Mylar and chrome coasted labels. 1250 is USDA approved for food packaging and conforms to Government Spec. AA-208D, Type I & IV Class B#1250 black ink conforms to Fed Std 595C Color#37038Use of the Mark II and Stone pad is highly recommended. Dye Based Colors: Black, Blue, Red, Green & Purple