The ULTIMATE concentrate contains Dr. Willard's patented Willard Water catalyst plus the addition of naturally occurring trace mineral supplementation--it really is the best of both worlds. The ULTIMATE Concentrate must be diluted according to instructions to ensure maximum effectiveness: add one liquid ounce (two tablespoons) of Dr. Willard’s Water® ULTIMATE Concentrate to one gallon of distilled, spring, filtered or tap water. Do not use carbonated water.