Twin-agent technology combines the fast flame knockdown of Purple-K dry chemical with the fire securing capabilities of ANSULITE® AFFF (aqueous film-forming foam). The twin-agent attack provides the most effective extinguishing and securing capability known for many flammable liquid fires. Dry chemical capacities of 450 to 1300 pounds (204 – 590 kg). AFFF solution capacity of 50 to 200 gallons (189 -757 L). Twin hose and nozzles.