Jacquard Alum, 1lb

Potassium Aluminum Sulfate (Alum) is used to pretreat fabric or paper before marbling to ensure that designs transfer clearly, as a mordant in some natural dyes, and in science projects. To use, dissolve one cup of Alum in water along with four teaspoons of Calgon. Apply it to your surface using a spray or sponge and allow it to dry completely before engaging your surface in marbling.

• A chemical used to pre-treat surfaces before marbling for best transfer results
• Can also be used as a mordant with some natural dyes and in science projects
• Dissolve 1cup Alum and 4tsp Calgon in water, apply to your surface, and allow to dry before marbling
• Available in 1lb and 5lb bags