This equals 2.64 US Liquid Quart. Sky-tech Dope Primer is a nitrate based first coat adhesion promoter primer coat. Used on Diatex, Ceconite or Polyfibre, it is specifically formulated to reduce the risk of dope separation for the raw fabric. This is a UK manufactured product similar to Rand-o-proof. This item is for Mainland UK only and cannot be shipped outside Mainland UK.