FW Artists' Ink is an acrylic-based, pigmented, water-resistant ink in a range of 38 colors, all of which have either a three-star or four-star rating for permanence. FW Artists Inks work well with dip pens, technical pens and brushes. - Daler-Rowney FW Acrylic Water-Resistant Artists Ink - Pouring Colors, Set of 4fw Acrylic Water-resistant Artists Ink, POURING INK SET - Experiment with pouring acrylic inks! Mix 1 part FW Ink to 1 part pouring medium, then pour the colors over the chosen surface to create cells and interesting effects. Dries with a smooth even colored film. Suitable for use on canvas, wood and other primed surfaces. This set includes three 1 oz bottles of FW Acrylic Water-Resistant Artists Ink in Process Cyan, Scarlet, and Process Yellow, and one 30 ml bottle of Daler-Rowney FW Ink Pouring Medium.