Aim of this work is to verify the state of the art related m R.N.A. purification process , the technology used as well as the materials employed .New methods vs classic methods: the use of affinity cromato-graphy or and high-gradient magnetic separation (H.G.M.S.). In particular the use of magnetic beads since introduction of the graphene coated ones.Various producers provide many kind of magnetic beads with various grade of efficiency in separation .Becasue today there is a great debate around graphene derivates peresence ( or not ) in vials of m R.N.A. VACCINE it is relevant to better clarify the production process as well and the materials used .This is of toxicological interest.Keywords: m R.N.A. VACCINE , production, purification, affinity chromatography, magnetic beads Magnetic beads graphene coated ,biopharmaceutical , large scale.