This acrylic primer can be used on a wide variety of surfaces and will dry quickly. No sizing needed before use on unprimed canvas, card, paper, hardboard or wood-panel. It should be ready to paint on - using oil, acrylic or tempera - within hours. This bottle contains 1 litre of primer. 1 litre of primer will cover approximately 14 square metres in an even, non-yellowing white. Contains acrylic resin and titanium dioxide.