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. 16 oz. jar. Blue. AP Seal, non-toxic.