A clear and colorless colloidal oil painting medium that accelerates the drying time of paintings. Grumbacher ZEC medium maintains the consistency and hue of colors and holds any desired texture. In normal applications, paintings dry to the touch in 4 to 6 hours. ZEC should be diluted with Pure Gum Spirits of Turpentine or Grumtine? only. It is not compatible with petroleum solvents, paint thinners, or odorless paint thinners. Mixtures of ZEC in excess of 1:1 will result in a brittle, dry paint film. Available in 5oz/150ml tubes. Made in the USA.