Fassa Mikros001 Primer 12LFassa Mikros 001 Primer is a water microemulsion wall primer with high penetration, used as a primer for interior and exterior walls prior to the application of various finishing coats. Thanks to ultra fine polymeric particles, Fassa Mikros 001 Primer ensures excellent penetration and impregnation to the substrate, reducing substrate absorption and uniformity to simplify subsequent finishing coat application and colour uniformity. Technical Data Sheet