Daler-Rowney System 3 Screen Printing Medium - Daler-Rowney 127500011, The Daler-Rowney System 3 Screen Printing Medium enables you to use your screen printing equipment again and again.The medium slows down the drying of acrylic colour on the screen and reduces the risk of screen blocking, making it easier to wash out with soap and water. The medium can be thinned with water. System 3 acrylic colours retain density of colour even after mixing with medium and substantial covering power can be achieved on fabric, paper, card and board. Please note: the medium is supplied in a pink/brown shade which will not affect the colour of the finished work. Daler Rowney System 3 Printing Medium 5 litre