Excellent quality, highly pigmented, water-based ink is a great value for schools. Handy Art Block Printing Inks completely intermix to extend the range of colors. Color goes on smoothly and evenly and dries to a satin finish. Terrific for block printing projects using linoleum, wood block, polyfoam or flexible vinyl plates. Easy to clean up with soap and water. 5 oz. tube. Turquoise. AP Seal, non-toxic.