Surface Primer is available in a range of basic shades most frequently employed to prepare the surface of the model or miniature before starting the painting process. Primers can be applied on all surfaces, including resin, PVC, brass, white metal or wood. The primer preserves even the smallest detail of a model and improves the adherence of the colours applied on this base. It is recommended to apply the Primer in various layers; the product dries rapidly and forms a homogenous film of extraordinary strength and resistance within a few hours after application. Surface Primer can be used directly or diluted with Vallejo Airbrush Thinner of Flow Improver. The recommended compressor settings are around 15-20 PSI or 0.5 to 1 kg. For the best maintenance of the airbrush, it is recommended to use the Vallejo Airbrush Cleaner. Surface Primer is not flammable and does not contain solvents.