Turkey Red or Sulfonated Tall Oil/3.5 Mix and add immediately. Emulsion separates on standing. Various methods are employed to achieve good water resistance. This is frequently achieved in the wallpaper industry by submerging the coated paper in a "hardening bath" or by applying the hardening solution to the coated surface only. Examples of a hardening sol'n follows Alum/34.5 Sodium Acetate/15.0 Borax/16.5 Water/52.0 Ammonium Hydroxide/0.5 Pine Oil/9.0 Water/12