Airbrush Medium has been developed by The Army Painter to enable our superior quality Warpaints to be used with an airbrush. The Airbrush Medium is highly versatile, and can be used with success on other high quality acrylic paints. Thinning Warpaints The Airbrush Medium should be applied in the approximate ratio 1 part medium to 1-2 parts Warpaint. AIRBRUSH MEDIUM: • 3.3 fl. oz. / 100 ml • Precision dropper bottle - No spill! • Thinner and flow inmprover in one