Jasart - Byron Pouring Medium Each size is sold separately. To view and/or purchase different sizes please use the scroll down menu above. Jasart Byron mediums & varnishes are ideal to use with Byron Acrylic Paint. Assortment of Mediums & Varnishes to get the desired effect easily. Designed for fluid effect and pouring techniques such as pour and puddles, acrylic inks and flow painting. Pouring Medium can be used with acrylic paints and inks. Dries to a wet-look finish. Can be used on many surfaces such as canvas, wood or other art surfaces. Available in 250ml, 500ml and 1L Directions for use: Mix approximately 10% of paint with 90% of Byron Pouring Medium. Adjust ratio to get desired consistency. Pour onto surface. Take a look at our entire range of the Jasart - Byron Medium Collection!