Daler-Rowney System3 Acrylic Screen Printing Medium 250ml Daler-Rowney System 3 Screen Printing Medium allows you to use your screen printing equipment over and over again.  The medium slows down the drying of the acrylic colour on the screen and reduces the risk of blocking the screen, making it easier to wash with soap and water.  The medium can be diluted with water. System 3 acrylic colours retain colour density even after mixing with medium and substantial hiding power that can be achieved on fabric, paper and cardboard. Quantity: 250 ml.  Brand: Daler-Rowney